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Modeling in Mechanical and Civil Engineering:Collection of papers from Prof. Nguyen-DangHung's former students

BOOK · OCTOBER 2010

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1 AUTHOR:

H. Nguyen-Dang

University of Liège

176 PUBLICATIONS 970 CITATIONS

SEE PROFILE

Available from: H. Nguyen-Dang

Retrieved on: 17 October 2015

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EDITORIAL BOARD

Honorary Editor

Nguyen-Dang Hung, Prof.

LTAS - Fracture Mechanics, Aerospace and Mechanical Department,

University of Liège, Belgium

EMMC Bureau, Ho Chi Minh University of Technology, HCM City, Vietnam

Co-Editors in Chief

Géry de Saxcé, Prof.

Laboratory of Mechanics, University of Sciences and Technologies of Lille, France

Nicolas Moës, Prof.

Institut GeM, Ecole Centrale de Nantes, France

International editorial advisory board

Stéphane Bordas, Prof.

Department of Civil Engineering,

University of Glasgow, Glasgow, UK

Michäel Bruyneel, Dr.R&D Engineer, Analysis Group,

SAMTECH SA, Liège, Belgium

Marc Duflot, Dr.

Multi-scale Materials Modeling Group,

CENAERO, Gosselies, Belgium

Mohammed Hjiaj, Prof.

Department of Civil Engineering and Urbanism,

INSA de Rennes, France

Patrick Morelle, Dr.

SAMTECH SA, Liège, Belgium

Marc Scibetta, Dr.

SCK-CEN, Mechanical Testing Group,Reactor Materials Research Unit,

Boeretang, Mol, Belgium

Doan-Duc Bao, Dr.

Tire-Vehicle Engineering Technology Dept.

Goodyear, Luxemburg

Matthieu Domaszewski, Prof.Department of Mechanical Engineering,

University of Technology of Belford-

Monbéliard, Belfort, France

Pierre Duysinx, Prof.

Laboratory of Vehicle Engineering,

Aerospace and Mechanical Department,


Reinaldo Jacques Jospin, Dr.

IEN (Instituto de Engenharia Nuclear),

Rio de Janeiro, Brasil

Jean-Philippe Ponthot, Dr.

LTAS - Continuum Mechanics and

Thermomechanics,

Aerospace and Mechanical Department,


Yan Ai Min, Dr.

LTAS - Structural Dynamics,Aerospace and Mechanical Department,


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Vietnamese editorial advisory board

Ms. Mai Chi, Deputy-Director

Department of Agriculture and Rural

Development,

Phan Thiet, Binh Thuan, Vietnam

Nguyen-Tien Duong, Dr.

Welding Engineering and Metal Technology,

Hanoi University of Technology,

Hanoi, Vietnam

Nguyen-Hoai Son, Dr.

Department of Mechanical Engineering,

Ho Chi Minh City University of TechnicalEducation,

HCM City, Vietnam

Chau-Dinh Thanh, Ms.

EMMC Bureau,

Ho Chi Minh City University of Technology,

HCM City, Vietnam

Vu-Duc Khoi, Dr.

Institute of Applied Mechanics,

University of Kaiserslautern, Kaiserslautern,

Germany

Phan-Hong Quang, Ms.

Deputy-Director of HUNG VIET Technology,

HCM City, Vietnam

Bui-Cong Thanh, Prof.

Faculty of Civil Engineering,

Ho Chi Minh City University of Technology,HCM City, Vietnam

Le-Dinh Tuan, Dr.

Naval Architecture & Marine Engineering

Department,

Ho Chi Minh City University of Technology,

HCM City, Vietnam

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On the behalf of Prof. Nguyen-Dang Hung, I would like to thank all his former students for their

kind contribution to the edition of the present book, particularly the two principal editors Prof. Géry

de Saxcé, Prof. Nicolas Moës and Prof. Stéphane Bordas who had the nice gesture to join the team.

It is important to mention also his close collaborators Phan-Hong Quang who had the initial idea

and Chau-Dinh Thanh who accepted the coordination job.

Hanoi, September 12, 2006Prof. Dr. Hoang Tuy, Institute of Mathematics,

Vietnam National Centre for Science and Technology

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Dedicated to Professor Nguyen-Dang Hung and his family

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CONTENTS

Editorial Board iForewords iii

Preface v

Contents ix

Nguyen-Dang Hung: the Scientist and the Man 1Géry de Saxcé and Duong-Thuy Phuong-Khanh

Prof. Nguyen-Dang Hung’s Curriculum Vitae 11

International Editorial Advisory Members’ Papers

A Métis Finite Element for Singular Stress Analysis of Junctions 43

and Delamination Cracks and Composite StructuresGéry de Saxcé, D. Crépin and M. Pyrz

Image-based Micromechanics Analysis using Level Sets 55

and the Extended Finite Elements Method Ionescu, Nicolas Moës, P. Cartraud and M. Béringhier

Smooth Strain Finite Elements: Selective Integration 62 Nguyen-Xuan Hung, Stéphane Bordas and Nguyen-Dang Hung

Topology Optimization of Membranes Made of Orthotropic Material 78

Vincent Rion and Michäel BruyneelLimit Analysis Theorems for Materials with a Non-Associated Flow Rule 88

Mohammed Hjiaj

Cold Roll Forming and Metal Cutting Simulation 104

using a 3D Arbitrary Lagrangian Eulerian Formulation R. Boman, L. Papeleux and Jean-Philippe Ponthot

Fracture Toughness Measurement using Circumferentially–Cracked Round Bar 118 Marc Scibetta, R. Chaouadi and E. Van. Walle

Analytic and Numeric Shakedown Solutions of Cylinder 141

and Sphere Structures under Thermal LoadingYan Ai Min

EMMC & MCMC Students’ Papers

Metis Element Method for Delamination in Composite Laminate 156 Nguyen-Tien Duong and Nguyen-Dang Hung

A United Algorithm for Limit State Determination of Frame with Semi-Rigid Connections 168 Nguyen-Dang Hung and Hoang-Van Long

Modified 8-Node Quarter-Point Element in Calculating Stress Intensity Factors 184

of 2D Crack Problems

Le-Hoai Long and Nguyen-Dang Hung

Dual Analysis for Finite Element Solutions of Kirchhoff Plates 194 J.F. Debongnie, Nguyen-Xuan Hung and Nguyen-Huy Cung

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Equilibrium Model in the Element Free Galerkin Method 207 Bui-Quoc Tinh, Marc Duflot, Stéphane Bordas and Nguyen-Dang Hung

Active Balancing of Monorotor during Operation 218 Le-Dinh Tuan

A Refinement Criterion with p-Version in the Error Estimate 229

and the Convergence Rate of the Finite Element Analysis Nguyen-Hoai Son

A Hybrid Stress Approach for High-Accuracy of Stresses 237

and Low Sensitivity to Mesh Distortion Dang-Dinh Thi and Nguyen-Dang Hung

Puncture Mechanics of Rubber Membranes 255 Nguyen-Chien Thang, Vu-Khanh Toan and Jaime Lara

Prediction of Delamination Strength at Interface 268

between Thin Film and Substrate by Cohesive Zone Model Do-Van Truong, Hiroyuki Hirakata, Takayuki Kitamura

Creating Macro Commands by using Bacon Commands to Simplify Meshing 280of 3-Dimensional Cracks and Calculate the Lifetime of Cracked Structures due to Fatigue

Nguyen-Dang Hung, Tran-Duc Han, Chau-Dinh Thanh and Nguyen-Van Hieu

Influence of Moment-Shear Interaction to T-stub Effect in Bolted Column-Beam Joints 294 Nguyen-Thanh Son, Nguyen-Van Yen and Bui-Cong Thanh

Determination of the Fatigue Characteristics of Cracks by an Inverse Analysis 304 Hang-Minh Dinh, Nguyen-Dang Hung

Limit Analysis of 2D Structure using Gliding Line Mechanism 318

Generated by Rigid Finite ElementsPhan-Hong Quang and Nguyen-Dang Hung

An Application of Homogenization’s Method for the Behaviour Elastic of Polymer Concrete 329 Nguyen-Huy Gia, E. Ghorbel, S. Ortola

Dual Limit Analysis of Plate Bending 340 Le-Van Canh, Nguyen-Xuan Hung, Nguyen-Dang Hung

Limit Analysis of Cracked Structures by Primal-Dual Optimization 354Vu-Duc Khoi

Initiation of Interface Crack at Free Edge between Thin Films with Weak Stress Singularity 371 Do-Van Truong, Hiroyuki Hirakata, Takayuki Kitamura

Effect of Frequency on Fatigue Crack Growth along Interface 382

between Copper Film and Silicon Substrate Do-Van Truong, Hiroyuki Hirakata, Takayuki Kitamura

Two Simple Flat Shell Elements for Elastic Analysis of Thin Shell Structures 393 Nguyen-Ngoc Duong, Nguyen-Xuan Hung, Nguyen-Van Hieu and Nguyen-Dang Hung

Index 405

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NGUYEN-DANG HUNG: THE SCIENTIST AND THE MAN

Géry de Saxcé* and Duong-Thuy Phuong-Khanh+ *Laboratory of Mechanics of Lille, UMR CNRS 8107,

University of Lille 1, France+Communication Manager Sanofi-Aventis, Ho Chi Minh City, Vietnam

1 The researcher and the professor

Nguyen-Dang Hung was born in 1941 in Vietnam. He spends his youth in a poor village in

central Quang Nam – Dà Nang province. Being an outstanding student at Pétrus Truong Vinh Ky

College, he has the chance to obtain a Belgian scholarship to go to Belgium in 1960 and to

undertake engineering studies at the University of Liège. The poverty of his native country, his

mother killed during the dark period of the resistance war against the French occupation and above

all, his father’s love drive him to succeed brilliantly in his studies. In 1966, he graduates asEngineer Physicist from the Laboratory of Aerospace Techniques (L.T.A.S.), a centre founded by

Professor Fraeijs de Veubeke and of worldwide reputation in the scientific community.

In 1966, he is hired in the L.T.A.S. as research engineer. Midst of this top level team, he is

hooked on the research passion that would not leave him yet. Fully immersed in Fraeijs de Veubeke

variational and numerical techniques, he dedicates his first works to the duality between

displacement and equilibrium methods. It will be a leading thread in the whole of his scientific

work. Nguyen-Dang Hung says sometimes the scope of duality goes beyond the science field and

may be understood in a large sense as a law of the nature and the life, which can be compared to

similar ideas in the oriental philosophy such as the yin and the yang. Besides his career takes soon a

new and important bend when in 1968 he moves to the Department of Strength of Materials andStability of Constructions headed by Professor Charles Massonnet, another impressive personality

of the Engineering Faculty of Liège in the closed domain of Civil Engineering.

Nevertheless, he is still preoccupied by the duality topic and he proposes what will undeniably

be one of its noteworthy and seminal contributions, the family of ‘mongrel’ finite elements.

‘Mongrel’ or ‘métis’ elements are two-field hybrid elements exhibiting monotonic and very fast

convergence with respect to the corresponding pure elements. The mongrel elements are

intermediate between the standard hybrid elements, which they share a good convergence rate with,

and the pure ones of which the convergence is monotonic too.

But it will not be long before Charles Massonnet with his great energy and enthusiasm attracts

him into another exciting topic, the plastic limit analysis. Already trained in structural computation,

Nguyen-Dang Hung develops the computing package CEPAO for the plastic limit analysis and

optimisation of typical civil engineering structures, the metallic plane frames. Certainly the main

originality of his code with respect to other existing ones is its ability to automatically generate the

collapse mechanism equations.

Coupled with a simplex solver, it is a powerful numerical tool to compute the limit load of such

structures. This pioneering work is the starting point of fruitful research in various connected topics.

The numerical code will soon be enhanced with a plastic optimisation module. A breakthrough

improvement consists in introducing additional controls on the stability rules according to theECCS European recommendations, converting an academic code into a practical tool for engineers

in research consultancy. Without endeavouring to mention all the features of CEPAO, we can

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emphasize among them the extension to reinforced concrete frames and the shakedown optimisation

module accounting for variable repeated loads.

At 30 years old In his LTAS-Fracture Mechanics office at 60 years old

Another computing package developed during the 70’s and 80’s decades is ADELEF. Nguyen-Dang Hung glimpses the power of the mathematical programming solvers combined with the finite

element method. It will be the centre of various research activities. The use of stress field

approximations seems especially suitable in plastic analysis but enforcing the yield condition

anywhere was a hard task. He proposes an original method based on the criterion of yield “in the

mean” leading to a relaxed variational principle allowing to compute the limit load of two-

dimensional structures. Limit analysis is an elegant method to bypass the complete loading history

before the collapse but it is drastically limited to problems with proportional loading, what is often

rather unrealistic in many applications.

The method reveals all its strength when applying to variable repeated loads: this is the

shakedown approach already mentioned. The spreading of knowledge is today widely provided bythe scientific literature in the journals and proceedings but it is not the unique way. In researcher’s

life, there are events that can be decisive. Such was his meeting with Jan König who explains him

the keystone ideas of the shakedown approach. Together, they write a paper about how to use the

finite element formulation for shakedown problems that was published in 1976 and will be the

starting point of works covering a large scope of engineer structures, two- and three-dimensional

structures, rotational plate and shells, elbows. A first token of the top level in this research field is

the participation to the European Union sponsored BRITE-EURAM Project LISA devoted to the

"FEM Based limit and shakedown analysis for design and integrity assessment in European

industry" (1988-2002).

Around the core of ADELEF package initially dedicates to the limit state problems, other

modules are developed to perform visco-plastic and contact analysis. All these works are achieved

by a team of young researchers supervised by Nguyen-Dang Hung and among whom can be

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mentioned P. Desir, P. Detroux, P. Falla, D. Frangopol, R. Jospin, P. Morelle, L. Palgen and Géry

de Saxcé. All this wealth of scientific results is gathered and structured in his Special Ph.D.

dissertation that conferred him the title of "Agrégé de Faculté". In 1982, Nguyen-Dang Hung

organises in Liège a workshop on the "Applications of the Mathematical Programming Method to

Structural Analysis and Design" and drawing forty or so participants from European countries. In

parallel with his research activities, he is going up through the academic grades: Assistant in 1968,

Assistant Professor in 1972, Lecturer in 1978, Associate Professor in 1984 and full Professor in1991.

Shortly afterwards, his research work is changing for a new domain that will modify deeply his

career: the fracture mechanics, a discipline strongly used by Aerospace and for which new

numerical tools in the commercial computational mechanics packages are needed by such

industries. SAMCEF, the finite element code of the L.T.A.S. has become a reference code in this

industrial sector and is commercialized by the SAMTECH Company. In 1987, Nguyen-Dang Hung

fulfils a one-year contract with SAMTECH to implement fracture mechanics tools into SAMCEF

for the S.E.P. firm. This first contract will be followed by other ones financed by the

AEROSPATIALE firm.

As a natural consequence of this important evolution, Nguyen-Dang Hung gets back in 1991 to

the L.T.A.S. as Professor and Head of the Section "Fracture Mechanics of Solids" and he will

remain there until now. This last period of his career is marked by an intensive contractual activity

in fracture mechanics with the companies and the regional and European institutions, in the spirit of

a high level theoretical and numerical research turned to the industrial and economical

development. From 1991 to 1995, he gets himself involved in the program "Multimaterials"

sponsored by the Walloon Region and devoted to the "development and assessment of the damage

phenomenon of composites". It is followed by the European COST action on the "modelling and

simulation of damage growth and crack extension in metallic and composites structures subjected

to fatigue with the presence of residual stresses" from 1995 to 1999, and the COMDY project

sponsored by the Walloon Region on the "delamination and damage of laminated composites under

dynamic loadings" from 2002 to 2006. Among these far-reaching investigations, we only would

like to mention the development of the computation package BECOME bases on the boundary

element method which turns out to be particularly efficient modelling crack problems. In this

matter, we can perhaps perceive the influence of Charles Massonnet whose the pioneering work on

the solving of the integral equations is often considered as precursor of this numerical method.

This main activity on fracture mechanics does not prevent him from pursuing its previous

researches on the shakedown load computation but, from then on, in a contractual way. ELSA, a

specialised version of ADELEF to elbows, is developed and used in the frame of a contract with

FRAMATOME Company. New contracts financed by the European community in the domain ofthe "Nuclear Science and Technology" are concerned by the shakedown analysis of pipes and

elbows, in collaboration with the Polytechnic Faculty of Mons and the British company NNC.

During this second L.T.A.S. period, the list of students and collaborators of Nguyen-Dang Hung

is long: Nicolas Moës, B. Borlée, Bui-Cong Thanh, Kang Chi Hang, Bui-Quoc Viet, Yan Ai Min,

Doan-Duc Bao, M. Duflot, S. Bordas, E. Maréchal, Jiang Yansheng, Nguyên-Dai Quy, Nguyen-

Tien Duong, Nguyen-Van Hieu, P. Schils, M. Scibetta, Vu-Duc Khoi, Do-Quang Khanh, Nguyen-

Dinh Giang, Dang-Dinh Thi, Tran-Duc Han, Chau-Dinh Thanh, Tran-Thanh Ngoc, Do-Van

Truong, Phan-Hong Quang, Bui-Quoc Tinh, Nguyen-Vinh Phu, Nguyen-Xuan Hung, Hoang-Van

Long…

Nguyen-Dang Hung is the author of more than 20 books and courses including a dictionary, andmore than 200 scientific works, most of them published by prestigious magazines throughout the

world. He was awarded a medal by the Belgian Royal Academy of Sciences, Literature and Arts

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and was decorated by the Belgian Government Grand Officer of King Leopold II 's orders in 1999

and is proposing to be decorated Grand Officer of the Crown’s order in 2006. It is worthwhile to

mention that in July 1999 he was selected by "Le Vif – l’Express" Belgium weekly magazine as one

of the ten active foreigners "who made Belgium move" but it is another facet of his personality that

we shall present in details in the following.

2 Developing the human resources for Vietnam

There were three waves of immigration from Vietnam: the first one date from the French

colonization, the second one which Nguyen-Dang Hung belongs to, consists of students, some of

them being scholarship holders. The latter wave is the one of the "boat people", a more diversified

population that is found in all the jobs, especially in the restaurants.

▲With Binh Thuan province officials. Behind them

is the station built in Mui Né, Vietnam, dedicated to

coastal measures, ANTIERO project supported by Brussels-Walloon Region (July, 2006).

With Congolese students in Kinshasa (1983)►

Nguyen-Dang Hung has played an active part in the activities of the Association of Patriotic

Overseas Vietnamese in Belgium. He uses to join demonstrations in Brussels or Liège against the

US war and in favor of the recovery of peace in Vietnam. In 1976, after the national reunification,

Nguyen-Dang Hung returns to Vietnam as a guest of the State Committee for Sciences and

Technology, the former name of the Ministry of Sciences and Technology, and gives lectures

during two weeks at the Institute of Transportation of Hanoi where the auditors are researchers

gathering from various Institutes of Technologies of Hanoi: Institute of Technology, CivilEngineering, Water Resources, Mechanics…

He maintains his Vietnamese nationality and would like to prepare his return to participate to the

development of Vietnam. Unhappily, the after war Vietnam’s situation was not as he could imagine.

One may find in his famous article: “The overseas Vietnamese's and the scientific co-operation with

Vietnam” (DOAN KET N° 418, Paris, November 1989), all his deception about the former

economic and social orientation in his beloved Vietnam during the first ten years of the

reunification.

But during this short stay, he also notes that: “Vietnam has abundant human resources and the

young people possess a traditional willingness to learn. Because of the long war, young Vietnamesecould not have the opportunity to go abroad and to receive an international education" . Willing to

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develop the human resources of Vietnam, Dr. Nguyen-Dang Hung understands that this objective

could only be achieved on the ground of a solid partnership embedded in an official program.

However, only until after 1989, with the "doi moi" policy, he may find the suitable economic and

politic opening to realize his projects. To reach this objective, he weaves a relationship network

thanks to several small projects taking off from 1990 and financed by various national and

international institutions (University of Liège, C.G.R.I., F.I.C.U.-A.U.P.E.L.F.-U.R.E.F now AUF,“ Agence Universitaire Francophone”).

With his own prestige and patience, he tries to persuade the foreign sponsors and the European

partners to finance the program. He also does his best to persuade the Government of Vietnam to

approve the program. This is not a simple action in that period. Thanks to his patience, tenacity and

efforts, in 1995, the program " European master in Mechanics of Construction, EMMC " for post-

graduate inter-university training program has been launched. Another program: " European Master

in Computational Mechanics of Continua, MCMC " is set up in Hanoi, three years later. At the

beginning, this project is supported by the National Agency of International Cooperation for

Development of Belgium. The post-graduate program is built on the European standards. In case of

success, the University of Liège delivers a diploma. Extra fellowships are friendly attributed to the best graduates to continue their studies in Europe, USA, Canada, Japan and Australia… for higher

level, mostly doctorate degree.

So far, both centres, which have invited renowned professors from various Belgian and later

European universities to lecture, have graduate more than 350 masters, of whom 20 are working

towards Ph.D. degrees around the world, mostly in Belgium. Of those graduated masters, 20% go

to abroad for Ph.D. degree, 30% are lecturing at universities in the country while the remaining

50% are working for state agencies, enterprises and businesses. Using his prestige, Nguyen-Dang

Hung has helped the Vietnamese Ministry of Education and Training coordinating with universities

in Europe to carry out a new Ph.D. training program for Vietnam's students. Under this program,

trainees will spend one-third of their study time in Vietnam and three-third in European countries. Nguyen-Dang Hung says: "This kind of graduate program helps students gain international

standard knowledge while saving training expenses". Moreover, in a social viewpoint, it allows

avoiding the dramatic damaging effects of the brain drain to the developed countries. In a practical

viewpoint, it makes more efficient the influence of the university scientific research on the technical

and economical problems of the Vietnam. There is no doubt that the philosophy of these projects is

partially inspirited by his first experience of Belgian cooperation as Associate Professor at the

University of Kinshasa in Zaire from 1982 to 1986.

In 2001, EU helped Vietnam developing information technology, including improving quality of

doing research and teaching. The first program is done in Ho Chi Minh City, which involved inuniversities of Technology in Ho Chi Minh City, Liège, French Montpellier II and Dutch TU Delft.

The second program is implemented in Hanoi with the participation of Universities of Liège,

French Aix-Marseille, Sweden TU Luleå, and five Vietnamese Universities of Technologies in

Hanoi. In 2003, an agreement was signed by Belgium Liège University and Vietnamese Civil

Engineering University to graduate 50 Ph.D. students during 10 years. This is the cooperation

between ten Vietnamese technology universities and ten famous ones in Europe.

There are more than 100 articles publishing in the Vietnamese newspapers speaking about the

heart and the enthusiasm of Prof. Hung dedicated to the Vietnamese post-students or for on-the-job

trainees. But few persons know his worrying for them when they first arrived in Belgium.

As most of them went abroad for the first time, there were several difficulties for them to getused to the local daily life. Nguyen-Dang Hung has to arrange accommodation for the new students

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and to explain to them the necessary procedure and formalities, the cultural shock, the working

method.

Opening ceremony of the EMMC programme(With Belgian Consul and Rector Truong Minh Ve of Ho Chi Minh University of Technology, 1995)

With Rector of the University of Liège, Bernard Rentier at the ceremony of delivering diploma to the students of the EMMC-2 class

He also has to solve many problems causing by the clumsiness of the Vietnamese students to the

Belgium people such as secretaries in office or managers in dormitory. He is not only interested in

developing the knowledge to the Vietnamese students, but he also wants that Vietnamese could

have self-confidence and could overcome the timidity. Thereby, he encourages Vietnamese to

participate in the cultural activities. In the occasion of Lunar New Year party organised by the

Embassy of Vietnam in Brussels, most of Vietnamese students in Liege perform several songs for

the Vietnamese and international audience under the leading of their enthusiast bandmaster:

Professor Nguyen-Dang Hung. Consequently, after the show, there were a number of Europeans

investors asks him about the Vietnamese students trained in Belgium and they contact those

Vietnamese immediately.

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Inauguration of EU-EMMD programme and diploma distribution of promotion MCMC-I

in Hanoi, 2001

Vietnamese newspaper cuttingdedicated to EMMC and MCMC program

There are about three million Viet kieu (overseas Vietnamese) living and working in foreign

countries, and more than 300,000 of them are graduated of post-secondary education. On January

27, 2005, the mobilization committee of the Overseas Vietnamese's Science and Technology Club

was inaugurated. Nguyen-Dang Hung belongs to the Provisory Executive Committee and the action

of which among the others is expected creating breakthroughs in attracting overseas Vietnamese

back to Vietnam. Nowadays, the Vietnamese Government becomes aware of the need encouraging

active contributions by overseas Vietnamese. On February 18, 2005, nineteen Viet kieu, among

them Professor Nguyen-Dang Hung were decorated for their contributions to the nation’s

development. The awards ceremony, titled “Vinh danh nuoc Viet” (Viet Nam’s Glory), is the first

of its kind organised by VietnamNet online newspaper, with support from the Viet Nam Fatherland

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Front. Besides, he is awarded by the Foreign Ministry of Vietnam in 2001 and two times (2002, 2006) by the Popular Committee of Ho Chi Minh City.

With his LTAS - Fracture Mechanic‘s staff,University of Liège, 1999

With wife and youngest son at WCCM VI Sept. 5-10, 2004, Beijing

Recently (2004), in an interview, the journalist asks him about his future. He says: “I would likeusing the rest of my cycle of times to continue some little useful things which give my life a sense. Then,

I would like to be back to my childhood, passing the night near a source murmuring with transparentwater current or to be close to a sea coast gathering the eternal music of waves coming from

eternity…”

All of us, we hope he could realise these modest wishes during his actual retirement, surr ounding byhis crowded and united family with four children and more than eight grand children.

3 The poet

Far from the scientist creativity, Nguyen-Dang Hung’s talent is many-sided: he is also the

author of poem collections in Vietnamese. It seems to us worthwhile to illustrate this facet of his

personality by reproducing this typical one translated from Vietnamese by himself in French.

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▲ With LTAS (Aerospace Department) colleagues,

University of Liège, June 2006

▲ With colleagues and graduated students, Aerospace section, June, academic year 2005-2006

Une lettre de l'été(«Bức thư mùa hè», Translation for my son Thierry)

Il m'est arrivé de me promener dans le Grand Nord,

Et j'attendais en vain la fin du jour

Car le rayon du soleil ne s'éteignait jamais, l'été est de retour

Sur les collines des pins bercés par le vent

J'entendais comme si l'espace se tordait

Et tout le passé me revenait, comme un tourment

Et m'éloignait du sommeil

Je pensais aux temps où tu n'étais qu'un petit enfant

Tu restais seul à la maison dans cette ville béante

Où est maman? Demandais-tu d'une voix sans pareil!

Je pensais à ces sentiers de notre village, inondés de soleil

J'ai suivi grand-mère visiter les tombes des disparues

Je pensais à ces vies décousues

A ces existences simples et éphémères

A ces pluies, ces vents, ces boues autour de cette chaumière

Et mon coeur se serrait comme une blessure mal soignée

Je pensais à ce petit orphelin élevé par ces gens

Et par miracle, il a grandi sans trop de mal

Et quand il commence à comprendre que la vie a un sens

Ils sont tous partis sans laisser le moindre bruit

Maintenant la paix est revenue et la vie continue

Mais les proches se sont dispersés à travers les quatre continents

Et les amis sont loin et on ne sait pas s'ils sont vivants

Oui la guerre est triste, une tristesse déconcertante

Mais qui peut décrire toutes ces détresses immenses?

En tout cas, moi je les porte comme un destin

Et même par chance, la vie parfois me sourit Elles surgissent un jour comme aujourd'hui, un beau matin

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Ne pouvant point dormir, je compose ces lignes

Et je note sur cette lettre : ici c'est le Grand Nord, le jour y est sans fin!(Luleå, Sweden, June 1998, Traduction Liège, March 9, 2004)

▲With his crowded and united family, Herstal, Liège, Belgium, May 2006

◄ With G. de Saxcé at the Eighth Int. Conf. Comp. Struct. Techn., Las Palmas, 12-15 September 2006

4 Colleague witness accounts

Géry de Saxcé

“It was a privilege and a pleasure to know Professor Nguyen-Dang Hung, first as teacher and

supervisor of my Master Degree stage, next as my Ph.D. supervisor and colleague. He is a

passionate and busy man whose the enthusiasm in research is communicative. It often occurred that

we wrangle together about scientific or politic subjects but these discussions were always enriching

and friendly. He is an outstanding developer of computation codes and one of the essential thinks

that he taught me is being always aware of the underlying theoretical bases. He is a nationalist in

the noble sense of this word: he is a man who is able of mobilising the energies of his fellow

countrymen to build together a better future and life.

At last, as good Vietnamese, he is a great jasmine tea drinker!”

Duong-Thuy Phuong-Khanh

“Recently, I visit his office located in Ho Chi Minh University of Technology and I have seen

again this very busy man who has just arrived in Ho Chi Minh City from Belgium. I ask him about

the motivation of his constant enthusiasm... He tell me possibly this is due to the fact he had so

much suffered during the French resistance war when he was a child living in Quang Nam

province... He had the chance to be alive, another chance to obtain Belgian scholarship to go

Belgian university... He seems better to do something useful for young Vietnamese and this feeling

pursue him all the times during these long years devoting for this education action...”

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Prof. NGUYEN-DANG HUNG’S CURRICULUM VITAE

1 Personal coordinates

Name: NGUYỄN- ĐĂNG HƯ NGDate and place of birth: 1st January 1941, Dien Ban, Quang Nam, Vietnam.

Nationality: Belgian and VietnameseCivil status: Married with Dươ ng-Thị Huỳnh-Mai,Children: Two sons and two daughters, Nguyễn-Đăng Thi (Thierry, 1965), Nguyễn-

Đăng Kiều-Mai (Delphine, 1973), Nguyễn-Đăng Kiều-Anh (Cécile, 1974)and Nguyễn-Đăng Hư ng-Nguyên (Constant, 1994).

Grand-children: Four grand-sons and four grand-daughters (2006)Homepage: http://www.ltas-rup.ulg.ac.be/dang

http://www.ulg.ac.be/ltas-rup/dang

Address: Institut de Mécanique et Génie Civil, Bât. B52/3,Chemin des Chevreuils 1, B-4000 Liège, BelgiqueTel : 32-4-3669 240 , 32-4-3669 241,Fax : 32-4-3669 311 , 84-8-8655351

E-mail: [email protected]

2 Education / Professional studies

Secondary school: Pétrus Truong Vinh Ky, Saigon, Vietnam (1954-1959)and Chu Van An, Saigon, Vietnam (1959-1960).

University Institution: University of Liège, BelgiumDegree/Diploma: Engineer in Physic-Aero-Space Engineering (1961-1966)Degree/Diploma: Special Ph.D. (Agrégé de l'Enseignement Supérieur, 1984)

3 Membership of professional bodies

Member of European Mechanics Society (EUROMECH).Member of the "Association des Ingénieurs sortis de l'Université de Liège" (A.I.Lg.).Member of Canadian Society for Mechanical Engineering.Member of I.A.S.S. (International Association for Shell and Spatial Structures).

Member of the Reviewer Corps of the Applied Mechanics Reviews.Member of the CEE-Working Group AG2 (Structural analysis of nuclear components).Member of the Management Committee of COST Action 512 (MMSP)Vice-President of the Provisory Management Committee of the Overseas Vietnamese ScientitsClub.

4 Honours and awards

Awarded by Belgian Royal Academy of Sciences, Literature and Arts (Louis BAES prize) (1984).Decorated by the Belgian Government: Labour medal of first class (1998).

Chosen by LE VIF-EXPRESS (16/7/1999) to be among the immigrated Belgians who participate tothe change of Belgium.Decorated by the Belgian Government: “Grand Officer of King Leopold II’s order” (1999).

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Awarded by the Foreign Ministry of Vietnam (2001).Awarded by the Popular Committee of Ho Chi Minh City, Vietnam (2002).Awarded by the Fatherland Front's Central Committee and the VIETNAMNET magazine: “Glory

of Vietnam” (2004).Decorated by the Belgian Government: Belgian Civic Cross of first class (2005).Awarded by the Popular Committee of Ho Chi Minh City, Vietnam (2006).

Proposed to be decorated by the Belgian Government: “Grand Officer of the Crown’s order” (2006).

5 Present position within the organizations

Member of the Executive Manager Comity of LTAS (Laboratory of Aero-Spatial Techniques:L.T.A.S).Full Professor and Head of the Division LTAS-Fracture Mechanics of Solids (1991-2006),University of Liege, Belgium.

6 Years with the organizations: 40 years

Research Engineer in the Department of Prof. B. FRAEIJS DE VEUBEKE (1966-1968),(Laboratory of Aerospace Techniques (L.T.A.S.), University of Liège, Belgium.Assistant of Prof. Ch. MASSONNET (1968-1972), Department of Strength of Materials andStability of Constructions, University of Liège, Belgium.Assistant Professor in the same Department (1972-1976).Lecturer (Chef des Travaux) in the same Department (1976-1982).Associate Professor, University of Kinshasa, Zaire (1982-1986)."Agrégé de Faculté" (1984-1991), Department of Mechanics of Materials, Stability of

Constructions and Mechanics of Structures, Univ. of LIEGE.Associate Professor, University of Liège, (chargé de cours, 1984-1991). Depart. of Strength ofMaterials and Stability of Constructions, University of Liège.Professor and Head of the Section LTAS-Fracture Mechanics of Solids (1991-2006).Professor Emeritus (2006-20**), University of Liège.

7 Key qualifications

7.1 Regular academic activities

In charge of the following lectures:

"Compléments de mécanique des solides” (Advanced Solid Mechanics) (30 h + 30 h), CSMMC(option), EMAAE, 2MP.“Mécanique de la rupture”, (Fracture Mechanics, 30 h. + 30h), 3MP, 3EMA.“Mécanique des céramiques”, ( Mechanic of Ceramic, 15 h + 15h), 3 EM (option)“Aspect thermodynamique des comportements des solides”, (Thermodynamic Aspect of theBehaviour of Solids, 20 h + 20 h), 3 EM (option).“Modélisation des solides par la méthode des éléments aux frontières“, (Boundary ElementMethod in Solid Mechanics, 15 h + 15 h), 3 EM (option), 3 MP (option)

7.2 Research activities

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7.2.1 Main topics

Computational Solid Mechanics (finite element method, boundary element method, analyticalmethod, mathematical programming techniques)

Non-linear Behaviour of Solids (plasticity, visco-plasticity, visco-elasticity, fatigue, damage) Limit State Calculations (limit analysis, shakedown analysis, and second order effects)

Advanced Solid Mechanics (fracture mechanic, contact of solids, mechanic of ceramic)Optimisation of Structures (limit design, shakedown design)Structural Analysis (beams, plates in extension and in bending, shells…)

Fracture Mechanics (linear, non-linear)

7.2.2 Main computing packages

Author of the following computing packages:

ADELEF , “Analyse et Dimensionnement aux Etats Limites par la Méthode des Eléments Finis“ -Analysis and Design in Limit State by Finite Element Method.

This package may perform:Elastic analysis: plane structures, rotational shellsLimit analysis: plane structures, rotational shellsVisco-plastic analysis: plane structuresShakedown analysis: plane structures, rotational plates and shellsContact analysis: plane structuresFracture analysis: plane structures

CEPAO, “Calcul Elastique-Plastique, Analyse et Optimisation“ - Analysis and Optimisation offrame structures.

This package may perform:Limit Analysis, Limit Design, Shakedown Analysis, Shakedown Design, Step-by-step Elastic-Plastic Analysis, Second Order Effects, Plastic Deformation Direct Calculations, StabilityControl, Optimal Design of Reinforced Concrete Structures...

SAMCEF, “Système d'Analyse des Milieux Continus par la Méthode des Elements Finis”:Contribution to the computation in the domains of Fracture Mechanic and Delamination ofComposites.

ELSA (1991-1993, Elbows Limit and Shakedown Analysis).

BECOME (1992-1994, Boundary Element Computational Method ).

7.2.3 Main joint-researches with industries

C.M.I. - contract: "Shakedown analysis of nuclear-reactor structures" , (3 years, 1983-1985)S.E.P. - SAMTECH - contract: "3-D fracture Mechanic by Finite Element Method" (1 year, 1987-1988)CARAT-DUCHATELET - contract: “Design of a lengthened and reinforced Mercedes" (1988).AEROSPATIALE (Marignane) - SAMTECH - contract: "Equivalent Domain Integral of VCE

Method” (1989).CEE-MONS - contract:” Numerical Analysis of Pressured Elbows" (1989).

AEROSPATIALE (Marignane) - SAMTECH - contract: "Collage Algorithm" , (1990).AEROSPATIALE (Toulouse) - SAMTECH contract: "Calculation of the integral J by the methodof Equivalent Domain Integral in SAMCEF under nonlinear conditions" . (1991).

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WALLOON REGION - Program Multimaterials: "Development and assessment of the damage phenomenon of composites" (1991-1995).CEE-AG2 Contract N° ETNUT-0110-B (1993) (in collaboration with Faculty of Technologiesof Mons, Belgium and the British society NNC): "Shakedown analysis of pipes and elbows" (1993-1995). CEE-AG2 Contract N° 0235 – UK, (major contactor: NNC): "Application of shakedown methods to

piping" (1994-1995).FRAMATOME (Paris) - Contract "Analyse limite des coudes avec le programme ELSA: Limitanalysis of elbows” (1994-1995).CEE- COST 512- EUROPEAN CONCERTED ACTION ON MODELLING IN MATERIALSCIENCE AND PROCESSING (MMSP) MATERIALS. Convention N° 2760, sponsored byWalloon Region. Project: "Modelling and simulation of damage growth and crack extension inmetallic and composites structures subjected to fatigue with the presence of residual stresses",

(1995-1999). CEE, BRITE&ERAM: Project N° BE97-4547: LISA: “ FEM Based limit and shakedown analysis

for design and integrity assessment in European industry”, (1988-2002).WALLOON REGION - Project COMDY, Convention 114696, " Delamination and damage of

laminated composites under dynamic loadings" (2002-2005).

7.3 General scientific and academic activities

7.3.1 Manager of scientific meetings

-Manager and chairman of the Liège-Workshop on theme "Applications of the Mathematical Programming Method to Structural Analysis and Design" , Liège, June 1, 1982 (40 participantsfrom European countries).

-Manager of the Milan-Liège day on theme "Boundary Finite Element Method" , Liège, January 26,1988.

-Manager of the contact group meeting on the theme: "Applications of the mathematical programming method in optimisation and analysis of structures" , Liège, May 6, 1988.

-Manager and chairman of the "One day Seminar on Boundary Element Method" , Liège December2 1991", organised by FNRS-BEM Contact Group with the participation of Ch. Massonnet, C.A.Brebia, P. Pereira, M. Géradin, P. Beckers, M. Hogge, J. Etienne...

-Member of the international scientific meeting "Computational Methods in Contact Mechanics”,

organized by Wessex Institute of Technology, Southampton, UK, July 1993.

7.3.2 Promoter of European research groups

-President of the FNRS contact group "Boundary Element Method" .

-Promoter and Secretary of the FNRS contact group "Mathematical Programming Techniques andtheir Applications in Structural Analysis and Design" .

-President of the FNRS contact group "Fracture and Damage Mechanics" (1992).

-Promoter and co-ordinator in Liège of the 3rd cycle Advanced Studies ERASMUS teaching program on "Computational Mechanics of Solids and Structures" , with the participation of 16European Universities or High Schools.

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-Administrator of the COMETT program named "European Network for Computer Science Appliedto Mechanics in Industry" (CSAMI, F. Muller, Place Jussieu, 4, University of Paris IV, France).

-Promoter and co-ordinator in Liège of the TEMPUS program named "Computer aide design of structures made of material with complex behaviour" with the participation of 20 Europeanuniversities or High Schools including Warsaw, Cracow, Poznan, Budapest, Bratislava, Prague,

Miskolc, Nis, Ljubljana...

-Chairman of working group IV (Simulation material properties), COST 512 of E.C.: Modelling of Properties COST 512 MMSP (95-96-97).

8 International activities

8.1 Member of cooperation agency

-Member of the Expert Committee (Aupelf&Uref, French Speaking Agency for Universities) for

the revival of "Institute of Technology of Phnom-Penh, Cambodia” (1992)

-Member of the Expert Committee (Aupelf&Uref, French Speaking Agency for Universities) forthe creation of the “Institute of Computer Sciences, IFI” in Ha Noi (1992).

-Member of the consortium "Engineering Sciences" (Aupelf&Uref, French Speaking Agency forUniversities) for the engineering training co-operation with Indochina (1994).

-Director of the Training Centre: "European Master in Mechanics of Constructions, EMMC", HoChi Minh University of Technology. (1995-2008).

-Director of the "Modelling and Computation in Mechanics of Continuum, MCMC" Centre, HanoiUniversity of Technology (1998-2008).

-Vice-President and Belgian Co-Coordinator of the Management Committee of the project"Coopération en matière de formation de Doctorat en Sciences Appliquées en partenariat,

Financement national du Vietnam", (2003-2010).

8.2 Promoter and co-ordinator of North-South projects

-Promoter and Co-ordinator of a North-South Multilateral Project, 1993 (Liège - Compiège – Ho

Chi Minh-City) sponsored by AUPELF: "l'aide aux institutions universitaires vietnamiennes en vuede la formation de chercheurs dans le domaine du calcul des structures via l'ordinateurs et de la

mécanique des solides" .

-Promoter and Co-ordinator of the project (1993-1995): "Training of Vietnamese researchers incomputational mechanics" with the participation of the Technical Faculty of Mons, PolytechnicUniversity, Institute of Mechanics, University of Ho Chi Minh city. This project is supported byFrench speaking community of Belgium via the CGRI.

-Promoter and Co-ordinator of the project (1995-2008): "European Master in Mechanics ofConstructions, EMMC" with the participation of the Technical Faculty of Mons, Free University ofBrussels, Catholic University of Louvain and University of Technology of Ho Chi Minh City .

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-Promoter and Co-ordinator of the project (1998-2006):"Master in Computation and Modeling ofContinuum, MCMC" with the participation of the Technical Faculty of Mons, Free University ofBrussels, Catholic University of Louvain and Institute of Technology, Institute of CivilEngineering, National University and Institute of Mechanics of Hanoi

-Promoter and chairman of the organising committee of the “International Colloquium in

Mechanics of Solids, Fluids, Structures and Interactions", Nha Trang, Vietnam, August 14 -18,2000.

-Promoter and co-ordinator of the project of transfer of know-how to National University of Ho ChiMinh City (University of Technology), in the domain computer aided engineering design by thecreation of a complete training programme: "European Master in Modeling of Continuum", 2001-2003, in collaboration with the Universities of Delft (Holland) and Montpellier II (France).

-Promoter and co-ordinator of the project of transfer of know-how Institute of Technology ofHanoi, Vietnam in the domain computer aided engineering design by the creation of a completetraining programme: "European Master in Modeling and Design of Engineering Sciences, EMMD”,

2001-2003 , in collaboration with the Universities of Lulea (Sweden) and Marseille II (France).

-Promoter and co-ordinator of the project “Feasibility study on and design of an inter-lockingblocks for the protection again erosion in the Binh Thuan Province, ANTIERO” , 2001-2007, incollaboration with the Water Resource University of Hanoi, Vietnam.

-Promoter and co-ordinator of the project "Coopération en matière de formation de Doctorat enSciences Appliquées en partenariat" , (National funding from Vietnamese government), incollaboration with the University of Civil Engineering, Hanoi, 2003-2010.

8.3 Lectures and seminars

-During the period of August 3 to September 23, 1977. Invited by the Committee of Sciences andTechniques of Vietnam and with aids of the CECODEL the following courses are given by

Nguyen-Dang Hung in Hanoi (Hydraulic Institute): - Implementations of the Finite Element Methodin Structural calculations (30 h + 15 h).

-During the period of May from 2 to 21.1991 Nguyen-Dang Hung is invited by the PolytechnicUniversity of Ho Chi Minh City (under contract with French speaking University Association(AUPELF) to give a cycle of lectures on the topic: "Advanced Computational Solid Mechanics" .

-23rd September 1977, Hydraulic Institute of Hanoi (invited by State Committee of Sciences andTechnologies of Vietnam). The topic: Limit analysis of shells of revolution by F.E.M. andmathematical programming .-2nd February 1989 at National Institute of Polytechnic Engineering,Ho Chi Minh City, Vietnam. Topic: "The Development of Computational Mechanics in theUniversity of Liege" .

-15th February 1990 at National Institute of Polytechnic Engineering, Ho Chi Minh City, Vietnam.Topic: "The Variational Principles and the Finite Element Method".

-During the period of July 15 to August 15.1991 Nguyen-Dang Hung is invited by the two aboveVietnamese universities to continue a cycle of lectures on the topic: "Introduction to finite elementmethod".

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-11th February 1992 at National Centre for Scientific Research of Vietnam, Institute of Mechanics(N°224 Doi Can, Hanoi, Profs Nguyen-Van Dao & Nguyen-Van Diep). Topic: "On thecomputational research in the domain of fracture mechanics" .

-17th February 1992 at Institute of Mechanics of Ho Chi Minh City, Vietnam (Prof. Nguyen-XuanHung). Topic: "A synthetic vision of fracture mechanics"

-18th February 1992 at Institute of Mechanics of Ho Chi Minh City, Vietnam (Prof. Nguyen-XuanHung). Topic: "The use of linear programming method in CEPAO, a compact package for plasticanalysis and design of frame structures".

-During the period 2 to 23 January 1993, Nguyen-Dang Hung is invited by the Institute ofMechanics and University of Technology of Ho Chi Minh City, Vietnam, to give lessons on thetopic: "Analyse et dimensionnement limite des structures dans les conditions de chargementscomplexes".

-25th June 1993, at Technical University of Budapest, Department of Metallic Structures (Prof.

Ivanyi Miklos, Final meeting of TEMPUS project). Topic (in French): "Dimensionnement des structures à barres dans les conditions de chargement fixes et variables".

-19th September 1994, at University of Aix-Marseille II, Department UNIMECA, “Technopôle deChâteau-Gombert” (Prof. Daniel Dufresne). Topic (in French) "Les nouveaux développements au

service LTAS-Mécanique de la rupture des solides concernant les recherches sur les méthodes

numériques en mécanique des solides".

-15th March 1995, AG2- Meeting (European Commission, Environment, nuclear safety and civil protection) Brussels. Topic: "Comparison and testing of numerical techniques for shakedownanalysis of nuclear plant components”, Research progress of the project ETNUT-0110-B (1993).

-14th February 1996, “Laboratoire de Mécanique et Acoustique”, CNRS, Marseille, (Prof. P.Suquet and Dr. P. Chabrand). Topic (in French): “Analyse limite des tuyaux et des coudes par laméthode des éléments finis et la programmation mathématique".

-15th May 1996, at “AEROSPATIALE Avions building (Toulouse-Blagnac), Department ofStructures (B. Laschaud)”. Topic (in French): "Les récents progrès de recherche sur lamodélisation des composites au LTAS, Liège".

-31st May 1996, at FRAMATOME building, “Paris-la-Défense, Département Bloc Réacteur et

Boucles Primaires” (M. Ph. Gilles). Topic (in French): ” Analyse limite des coudes utiles sans lesréacteurs nucléaires".

-23rd February 2000, “Midterm meeting of Brite&Eram LISA project”, Brussels (Profs. M. Staatand E.F. Hicken). Topic: “Developments of algorithms for shakedown analysis”.

-17th May 2000, “Laboratoire de Génie Civil et Mécanique, LGCM, Université de Montpellier II”,(Prof. Ch. Licht). Topic (in French): "Analyse limite et calcul d’adaptation plastique des coudes etdes coques."

-19th November 2000, at University of New South of Wales, Department of Civil Engineering,

(Prof. Francis Tin-Loi). Topic: “About equilibrium finite elements”.

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-7th December 2000, at Institute of Architecture of Hanoi (Prof. Nguyen Tram). Topic:"Introduction to fracture mechanics".

-10th January 2001, at University of Liège, Journey of CEIM (Prof. René Maquoi). Topic (inFrench): “Le Service LTAS-Mécanique de la Rupture et les recherches dans le domaine del’analyse limite et du calcul d’adaptation plastique des structures métalliques“.

-August 2002, at University of Water Resource of Hanoi (Prof. Nguyen-Van Mao). Topic:"Fracture mechanics and applications on dam constructions".

- November 2002, at University of Liège (Chaired by Prof. Willy Legros, Rector of University ofLiège and Prof. Pham-Sy Tien, Head of the Department of Postgraduate Training, Ministry ofEducation and Training of Vietnam). Topic: "Bilan de dix ans la coopération Université de Liège -Universités Vietnamiennes dans la formation doctorale".

-June 2004, Tuesday 1st, at "Stakeholder meeting" organised by EC Delegation in Hanoi. Topic: "The programme EU-EMMD and the Inter-University cooperation with a consortium of 5

Universities of Technology in Hanoi".

-June 2004, Thursday 3rd, at "Stakeholder meeting" organised by EC Delegation in Ho Chi MinhCity : Topic : "The programme EU-EMMC and the Inter-University cooperation with the Ho Chi

Minh University of Technology".

-Visiting lecture from 20/12/2003 to 15/2/2004, Ho Chi Minh University of Technology and HanoiUniversity of Technology, Vietnam.

-Visiting lecture from 28/12/2004 to 21/2/2005, Ho Chi Minh University of Technology and HanoiUniversity of Technology, Vietnam.

-March 2005, Friday 11 at "NidaGroup and Henri Tudor Research Centre” organise by Dr SalimBelouettar, CRP Henri Tudor, and Luxembourg: Topic: "Direct and indirect metis finite elementmethod for edge delamination in laminates".

9 Professional experience record in other countries

-During academic years, (1982-1986) on contracts with A.G.C.D. (Belgian Ministry of Co-operation), Nguyen-Dang Hung is a permanent professor at Polytechnic Faculty, University of

Kinshasa Zaire. He gives the following courses:

Applied Static (30 h + 30 h, First year of Engineering study) Strength of material and elasticity (45 h + 45 h, 2nd year) Stability (45 h + 45 h, 3rd year)

Metallic constructions (60 h + 60 h, 4th year) Applied Mechanics (30 h + 30 h, 4th year) Advanced studies of stability (30 h + 30 h, 5th year)

-During the period from 15th to 19th July 1985, Nguyen-Dang Hung is invited by the InternationalCentre of Mechanical Sciences, Undine, Italy to give four lectures in the topic of "Applications of

mathematical Programming Technique to Plastic analysis and Design".

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-During the period from 26th October to 26 January, Nguyen-Dang Hung is invited by l'A.G.C.D.(Belgian Ministry of Co-operation) to give the following lectures in Polytechnic Faculty, Universityof Kinshasa, Congo:

Elasticity (15 h + 15 h) Stability (45 h + 45 h)

Applied Mechanics (30 h + 30 h) Advanced Studies of Stability (30 h + 30 h)

-During the period from 15th to 17th November 1988, Nguyen-Dang Hung is invited by the SocietySAMTECH (Liège) and “Aerospatiale-Division Hélicoptères” (Marignane, France) to give a courseon the topic "Fracture Mechanics and the Finite Element Approaches" .

-During the period from 17th to 20th January 1989, Nguyen-Dang Hung is invited by the SocietySAMTECH (Liège) and Aerospatiale, Service de calcul des structures, (Toulouse, France) to give acourse about "Finite Element Method in Fracture Mechanics".

-During the period from 19th to 21st June, 1990, Nguyen-Dang Hung is invited by the societySAMTECH (Liège) to give a course on the topic "The SAMCEF Package and the Computational

Fracture Mechanics".

-During the period from October from 8 to 12.1991, Nguyen-Dang Hung is invited by the TechnicalUniversity of POZNAN, Institute of technological constructions, Poland to give a cycle of lectureon the topic: "Limit analysis and limit design of frame structures".

-During the period of October from 14 to 18.1991, Nguyen-Dang Hung is invited by the TechnicalUniversity of KRAKOW, Institute of Civil Engineering, Poland to give a cycle of lecture on thetopic: "Computation of limit and shakedown design of frame structures" .

-During the period from May 30 to June 4. 1992, Nguyen-Dang Hung is invited by the TechnicalUniversity of Budapest, Hungary, Department for Steel Structures to give a cycle of lecture on thetopic: "Direct plastic limit analysis and limit design of frame structures under proportional andvariable loadings".

-During the period from 2nd to 23rd January 1993, he is invited by Institute of Applied Mechanics,and Institute of Technology of Ho Chi Minh City, Vietnam, to give a cycle lecture on (inVietnamese): "Limit Analysis and design of structures under complex loadings".

-During the period from 17 to 21 June 1993, Nguyen-Dang Hung is invited by the "IstitutoSuperior Tecnico, Departemento de Engenharia Civil" (Prof. Teixeira de Freitas), Portugal, to givelessons on the topic: "The monotonous convergence of the pure and metis finite element models".

-During the period from 17th to 21st June 1993, he is invited by “Istituto Superior Tecnico,Departemento de Engenharia Civil” (Prof. Teixeira de Freitas), Portugal, to give two lessons on thetopic: "The monotony of the convergence of the pure and “metis” finite element" and “On thedouble singularity of a “metis” finite element useful in crack problems”.

-During the period from 24th to 28th January 1994, he is invited by Institute of Applied Mechanics,and Institute of Technology of Ho Chi Minh city, Vietnam, to give a cycle lecture on "Advanced

mechanics of solids".

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-During the period from 11th to 15th July 1994, he is invited by Institute of Applied Mechanics, andInstitute of Technology of Ho Chi Minh City, Vietnam, to give a cycle lecture on "Introduction toboundary elements”.

-During the period from 8th February to 8th March the from the first to 30th July 1996, he is invited by University of Aix-Marseille II, Department UNIMECA (Prof. D. Dufresne) to give a cycle of

lectures on (in French): "La fissuration et le calcul de ténacité par les méthodes numériques dans leSAMCEF".

-During the period from 21st to 22nd October 1996, he is invited by Prof. Tran-Ich Thinh, Instituteof Technology of Hanoi to give two seminars on: “ Introduction to fracture mechanics» and « The

finite element method and the fracture mechanics“.

-During the period from 24th to 25th October 1996, he is invited by Prof. Phan- Ky Phung, Rectorof the University of Da Nang, Vietnam to give two seminars on: “Introduction to fracturemechanics“ and “The finite element method and the fracture mechanics“.

-During the period of 24th February to first March 1997, he is invited by University of Aix-Marseille II, Department UNIMECA (Prof. D. Dufresne) to give a cycle of lectures on (in French):"Introduction de la méthode des éléments aux frontières"

-From September 1995 to December 2000, he is invited by Institute of Technology of Ho Chi MinhCity under the auspice of the EMMC programme to give ten lectures on the topics (in Vietnamese):“Modeling in solids and structures under non linear conditions“, “Fracture

mechanics“,“Boundary element method“.

-During the period from 10th April to 16th June 2000, he is invited by University Montpellier II,Laboratory LGCM, and (Profs René Motro et Christian Licht) to give cycle of lectures on (inFrench): "Comportements non linéaires des solides".

-During the period of 9th to 14th October 2000, he is invited by University of New South ofWales (Prof. Francis Tin-Loi) to give a seminar on the theme: "On the equilibrium elements andtheir role in structural mechanics".

10 Publications

Books and courses: 23,

Papers (individual or collective), articles in conference proceedings and scientific reports: 203,several general papers, travel reports and interviewsPoem individual or collective collections: 12 (in Vietnamese).

10.1 Books and courses

1. "Non-Linear Behaviour of Materials", (in French) 140 pages, Department of Mechanics ofMaterials, Stability of Constructions and Mechanics of Structures, University of Liège, (1980).

2. “ Plasticity, viscoelasticity, thermoelasticity” (in French and in collaboration with Ch.MASSONNET), Lecture edited by the "Laboratoire de Mécanique des Matériaux et de Stabilité desConstructions", (1981), 340 pages.

3. "Applied Static" (in French) - Edition PUZ, Kinshasa, Zaire (1983), 220 pages

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4. "Elements of Elasticity" (in French) - Edition PUZ, Kinshasa, Zaire (1983), 120 pages

5. "Strength of Materials" (in French) Tome I, Department of Constructions, Polytechnic Faculty,170 pages, 1983.

6. "Strength of Materials" (in French) Tome II, Department of Constructions, Polytechnic Faculty,

185 pages, 1983;

7. “Applications of the mathematical programming method to structural analysis and design”,Engineering Structures, Butterworth, vol. 6, n° 1, January 1984.

8. "On the Plasticity theory and the plastic limit calculations of Structures" (in French), Publicationn° 98, Faculty of Applied Sciences, University of Liège (1985), 480 pages.

9. "A course of Elasticity" (in French), Division of "Numerical Modeling in Mechanics andStructures", Department of Mechanics, Technology University of Compiègne, France (1986), 204

pages.

10. "Complements of Mechanics of Solids: plasticity, viscoelasticity, Fracture Mechanics" (inFrench), Lecture edited by the “Laboratoire de Mécanique des Matériaux et de Stabilité desConstructions“, University of Liège, (1989), 340 pages.

11. "Fracture Mechanics: Numerical approaches" (in French), edited by SAMTECH (1989), 250 pages.

12. " Introduction to Boundary Element Method", a course in French, LTAS Fracture Mechanics,1990, 120 pages.

13. "A course of Fracture Mechanics" (in French), edited by LTAS-Mécanique de la Rupture desSolides, University of Liège, 1990, 350 pages.

14. "Inelastic Analysis of Structures under Variable Loads, Theory and Engineering Applications" , published by Kluwer Academic Publishers, 2000, the chapter: “ Direct finite element kinematicalapproaches in limit and shakedown analysis of shells and elbows” (in collaboration with YAN A-M), pp. 233-254.

15. "Introduction to Solid Mechanics", (in French and in Vietnamese), edited by PolytechnicUniversity of Ho Chi Minh City, Vietnam, May 1991, 250 pages.

16. "Advanced fracture mechanics", syllabus in French used during stay I in University of MarseilleII (UNIMECA), 1996, 26 pages.

17. "Fracture mechanics and finite element method", syllabus in French used during stay I inUniversity of Marseille II (UNIMECA), 1996, 30 pages.

18. " Introduction to the boundary element method" , syllabus in French used during stay I inUniversity of Marseille II (UNIMECA), 1996, 60 pages.

19. "Non linear mechanics of solids“, syllabus in French used during stay in University of

Montpellier II, 2000, 250 pages.

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20. "Dictionnaire de l'architecture et du bâtiment, français-Vietnamien". (in collaboration withDoan-Nhu Kim and Doan-Dinh Kien), book prepared under the sponsoring of “l'AgenceUniversitaire de la Francophonie" Van Hoa publisher, 1999.

21. "Proceedings of the International colloquium in Mechanics of solids, fluids, structures andinteraction", August 14-18 Nha Trang, edited by LTAS-University de Liège (co-editors: F. Ronday

and Nguyen-Van Diep), 886 pages, 2000.

22. “Limit Analysis of Defects”, (in collaboration with Staat, M.; Heitzer, M.; Yan, A.M.; Vu-DucKhoi; Voldoire, F. and Lahousse, ZENTRALINSTITUT FÜR ANGEWANDTE MATHEMATIK(ZAM), Berichte des Forschungszentrums Jülich 3746, Jül-3746, 2000.

23. "Complementary, duality and symmetry in nonlinear mechanics", proceedings of ShanghaiIUTAM Symposium, Edited by David Gao, Kluwer Ac. Publ., Chapter: “ Duality in kinematicapproaches of Limit and Shakedown Analysis of Structures. (in collaboration with Yan Ai Min andVu-Duc Khoi), pp 128-148, 2004.

10.2 Journal papers (chronological order)

1. Displacement and equilibrium methods in matrix analysis of trapezoidal structures. Collectiondes Publications de la Faculté des Sciences Appliquées, n° 21, 1970.

2. Duality in the analysis of shells by the finite element method . International Journal of Solids andStructures, March 1971, vol. 7, issue 3 pp. 281-299.

3. Limit analysis of framed structures. (in French), Construction métallique, magazine edited byCTICM, Nr 4, 1972.

4. Limit analysis of rigid-plastic structure by a quasi-direct method (in French) presented atSéminaire de Plasticité et Viscoélasticité, Ecole Polytechnique de Paris, 27-29 September 1972.Published in Sciences et Techniques de l'Armement. Mémorial de l'Artillerie Française, 2nd section,1973.

5. Application of the plasticity in the metal working problems (in French). Revue de la SociétéRoyale des Ingénieurs et des Industriels, Nr 1/2; January-February 1974, pp. 14-32.

6. Introduction to Finite element method (in French). Annales des Travaux Publics de Belgique, N°1, 1973/1974.

7. Quasi-static approach of limit analysis problems (in French). Buletinul Scientific al Institutuluide Constructi, Bucharest, Anul 17, 1974.

8. Displacement potentials for membranes on stretching and stress-function potentials for plate onbending . Ingenieur-Archiv 45 (1976), pp. 41-53.

9. Theoretical formulation and numerical efficiency of a bending finite element . (in French and incollaboration with P. Detroux), Collection des Publications de la Faculté des Sciences Appliquées,University of Liège, N°5, 1976, pp. 357-376.

10. Direct Limit Analysis via Rigid-Plastic Finite Element , Computer in Applied Mechanics andEngineering, vol. 8, Issue 1, April-May 1976, pp. 81-116.

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11. A finite element formulation for shakedown problems using a yield criterion of the mean. (incollaboration with Jan Konig). Computer in Applied Mechanics and Engineering, vol. 8, Issue 2,June 1976, pp. 179-192.

12. Finite element discretization and the numerical method in applied mathematics, (in French),Annales des Travaux Publics de Belgique, nr 5, 1976, and pp. 357-376.

13. Two field variational principles for Saint-Venant-von Mises material (in French) Bulletin del'Académie Polonaise des Sciences (Warsaw). Série des sciences techniques, vol. 24, n° 7-8, pp.325-331, 1976.

14. Plastic collapse of shells of revolution by non-linear programming and finite elementtechniques. Journal of Engineering Mechanics Division, ASCE, vol. 104, Nr 3, June 1978, pp. 707-712.

15. Probabilistic plastic analysis of framed structures. (in collaboration with D. Frangopol),Construction métallique, magazine edited by CTICM, Paris, Nr 1, 1977, pp. 19-43.

16. The numerical performance of a plate bending hybrid finite element . (in French and incollaboration with P. Desir). Collection des Publications de la Faculté des Sciences Appliquées,University of Liège, Nr 66, 1977, pp. 65-123.

17. Quasi-lower bounds and upper bounds of the plastic ultimate pressure in rotationally shells by finite element methods and mathematical programming techniques (in French, in collaboration withMarc Trapletti and Daniel Ransart). International Journal of Non-linear Mechanics, edited by Prof.A. Nash, vol. 13, Issue 2, pp. 79-102, 1978.

18. Plastic strength of a reinforced double T beam subjected to bending and shearing (in Frenchand in collaboration with Ch. Massonnet and J. Janss), Centre de Recherches Scientifiques etTechniques de l'Industrie des Fabrications Métalliques, MT 126, Brussels, Belgium, September1978.

19. New numerical experiences in shell limit analysis of revolution (in French). (in collaborationwith D. Frangopol). Science and Technique Journal of Rumania-Series of Applied Mechanics, vol.23, Nr 4, 1978.

20. Shakedown analysis by displacement method and equilibrium finite element (in collaborationwith L. Palgen). Transactions of the CSME, vol. 6, Issue 1, pp. 32-39, 1980-81.

21. Frictionless contact of elastic bodies by finite element method and mathematical programmingtechnique. (in collaboration with Géry de Saxcé). Computers and Structures, vol. 11, Issue 1-2, pp.55-67, 1980.

22. Contact of elastic solids by finite element and mathematical programming methods. (in Frenchand in collaboration with Géry de Saxcé). Archiwum Inzynierii Ladowej, Polish Academy ofSciences, Warsaw, 26, Nr 1, pp. 95-124, 1980.

23. on the variational principles in plasticity (in French). Collection des Publications de la Facultédes Sciences Appliquées, Liège, Belgium, Nr 84, 1980, pp. 59-76.

24. Finite element equilibrium analysis of creep using the mean value of the equivalent shearmodulus. Meccanica (AIMETA, Italy), Nr 4, December 1980, vol. 15, pp. 234-245.

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25. Analysis and optimisation of framed structures in the stable conditions. (in French).Construction métallique (FRANCE), Nr 3, 1981, pp. 15-38.

26. Shakedown analysis by finite element method and linear programming techniques. Journal demécanique appliquée, Paris, France, vol. 2, no 4, pp. 587-599, 1983.

27. Dual analysis of frictionless contact problems by displacement and equilibrium finite elementmodels (in collaboration with Géry de Saxcé). Engineering Structures, Butterworth, Special numberedited by Nguyen-Dang Hung, vol. 6, Nr 1, January (1984), pp. 26-32.

28. CEPAO, an Automatic Program for Plastic Analysis and Optimisation of Frame StructuresUnder Stability Conditions, Engineering Structures, Special Number, edited by Nguyen-DangHung, vol. 6, Nr 1, January (1984), pp. 33-51.

29. Applications of the mathematical programming method to structural analysis and design.Proceedings of the Workshop of Liège, 1 June 1982, Engineering Structures, Butterworth, vol. 6, Nr1, January 1984.

30. Aspect of Analysis and Optimisation of Structures under Proportional and Variable Loadings.Engineering Optimisation, vol. 7, Nr 1, pp. 35-77 (1983).

31. An Automatic Method for the Displacement Elastic-Plastic Calculation at Plastic CollapseState-Method Using Linear Programming Technique (in French). Construction métallique, Nr 1,1983, pp. 27-36.

32. A Direct Method for Information Analysis at Plastic Collapse State (in French). Annales de laFaculté Polytechnique, University of Kinshasa, Zaire, vol. III, IV, V, June 83/84/85, pp. 37-54.

33. Further Aspects of Analysis and Optimisation of Structures Under Proportional and Variable Loading . Annales de la Faculté Polytechnique, University of Kinshasa, Zaire, vol. III, IV, V, June83/84/85, pp. 1-6.

34. Dual analysis of frictionless problems by displacement and equilibrium finite elements,Engineering Structures, (in collaboration with Géry de Saxcé), Volume 6, Issue 1 , January 1984,Pages 26-32.

35. CEPAO—an automatic program for rigid-plastic and elastic-plastic analysis and optimizationof frame structures, Engineering Structures , Volume 6, Issue 1 , January 1984, pp 33-51.

36. The geometric nature of plasticity laws (in collaboration with Géry de Saxcé), EngineeringFracture Mechanics, Volume 21, Issue 4 , 1985, Pages 781-798

37. Introduction à la mécanique de la rupture (in French). Annales des Travaux Publics deBelgique, N° 4, 26 pages (1988).

38. Modified Formula for three-dimensional Direct Stress-Intensity Factor Computation (incollaboration with Géry de Saxcé). Communication. in Appl. Num. Meth.", Vol. 6, pp 223-230(1989).

39. The computational of 2-D stress intensity factors using hybrid-mongrel displacement finiteelement . (in collaboration with Géry de Saxcé and Kang Chi Hang), Engineering FractureMechanics Volume 38, Issues 2-3 , 1991, pp 197-205.

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40. Dual boundary element analysis of the multiple-cracked body. (in collaboration with Yan AiMin and Nicolas Moës), book edited by C.A. Brebbia - A.S. Kassab, p. 235-242, 1994.

41. Stress intensity factors and crack extension in a cracked pressurised cylinder. (in collaborationwith Yan Ai Min), Engineering Failure Analysis, Vol. 1, Issue 4, pp 307-315, December 1994.

42. Elastic analysis of the multiple-cracked structure by DBEM . (in collaboration with Yan AiMin). Compte rendu du 3ème Congrès national belge de Mécanique théorique et appliqué. Liège,May, pp 1-4, 1994.

43. Multiple-cracked fatigue crack growth by BEM , (in collaboration with Yan Ai Min),Computational Mechanics, Vol. 16, No. 5, pp273-280, (1995).

44. Simulation du délaminage des stratifiés par des éléments d’interface (in collaboration with Bui-Quoc Viet). Journey of FNRS, Louvain-la-Neuve, March 1997.

45. Analyse limite des structures fissures (in collaboration with Yan Ai Min). Journey of FNRS,

Louvain-la-Neuve, March 1997.

46. Limit analysis and shakedown computation of shells and elbows (in collaboration with BorleeB). Journey of FNRS, Louvain-la-Neuve, March 1997.

47. An enhanced elbow element – application in limit state analysis. (in collaboration with Yan AiMin and Jospin R.J). Int. Journal of Num. Method. Engng. Vol.46, 409-431, 1999.

48. Practical estimation of the plastic collapse limit of curved pipe subjected to complex loading (incollaboration with Yan Ai Min and Gilles Ph). Structural Engineering and Mechanics, pages 241-438, Vol.8, N°4, 1999.

49. Limit analysis of cracked structures by mathematical programming and finite element technique (in collaboration with Yan A-M). Computational Mechanics, Springer-Verlag, pages 319-333, Vol.23, 1999.

50. Imperfect interlaminar interfaces in laminated composites: bending buckling and transientresponse (in collaboration with Bui-Quoc Viet and E. Maréchal) Comp Sci Techol, 1999; 59, pp:2269-77.

51. Imperfect interlaminar interfaces in laminated composites: interlaminar stresses and strain-

energy release rates, (in collaboration with Bui-Quoc Viet and E. Maréchal), Composites Scienceand Technology, Volume 60, Issue 1 , 1 January 2000, pp 131-143.

52. Direct finite element kinematical approaches in limit and shakedown analysis of shells andelbows (in collaboration with Yan Ai Min), pp. 233-254, Inelastic Analysis of Structures underVariable Loads, Theory and Engineering Applications, published by Kluwer Academic Publishers,2000.

53. Imperfect interlaminar interfaces in laminated composites: delamination with the R-curveeffect, (in collaboration with Bui-Quoc Viet and E. Maréchal), Composites Science andTechnology Volume 60, Issue 14 , November 2000, pp 2619-2630;

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54. A finite-element model of mixed-mode delamination in laminated composites with an R-curveeffect (in collaboration with Yan Ai Min and E. Maréchal). Composites Science and Technology 61,2001, pp 1413-1427.

55. Kinematical shakedown analysis with temperature-dependant yield stress (in collaboration withYan Ai Min) Int. J. Num. Meth. Engng., 2001; 50:pp1145-1168.

56. A truly meshless Galerkin method based on moving least squares quadrature (in collaborationwith Duflot Marc). Communication in International Journal for Numerical Methods in Engineering,

N°18, pp 441-449 (2002)

57. Dual analysis by a meshless method (in collaboration with Duflot Marc). Communications in Numerical Methods in Engineering, N°18, pp 621-631 (2002).

58. Analysis of cracked plate bending by using a metis element. (in Vietnamese and in collaborationwith Tran-Thanh Ngoc). Revue Construction, Vol. 7, 2002, p 22-25.

59. Analysis of cracked plate membrane problem using a metis element model (in collaboration withTran-Thanh Ngoc). Vietnam Journal of Mechanics, vol. 24, 2002, N°4, pp 249-256.

60. Kinematical formulation of limit and shakedown analysis (in collaboration with Yan A. M., Vu-Duc Khoi), NIC Series Volume 15: Numerical Methods for Limit and Shakedown Analysis, Johnvon Neumann Institute for Computing, Jülich, Edited by Manfred Staat and Michael Heitzer, 2003,

pp 85-103.

61. A dual form for discretized kinematical formulation in shakedown analysis. (in collaborationwith Vu-Duc Khoi and Yan Ai Min). Int. Journal of Solids and Structures, Vol. 41, Issue 1 pp 267-277, Pergamon, 2003.

62. On the construction of a protection structure against the coastal erosion of Ham Tien – Mui Ne, Province of Binh Thuan, Vietnam (in Vietnamese, collaboration with Nguyen-Van Mao, WaterResources University of Hanoi). Journal of Resources & Environment Engineering Nr 1, pp 25-36,June/2003.

63. Analysis of cracked plates and shells using "metis" finite element model. (in collaboration withTran-Thanh Ngoc). Finite Elements in Analysis & Design (Elsevier), Volume 40, Issue 8, pp. 855-878, May 2004.

64. A primal-dual algorithm for shakedown analysis of structures (in collaboration with Vu-DucKhoi and Yan Ai Min). Computer Methods in Applied Mechanics and Engineering (Elsevier), Vol.193/42-44 pp. 4663-4674, May 2004.

65. Fatigue crack growth analysis by an enriched meshless method (in collaboration with MarcDuflot), Journal of Computational and Applied Mathematics , Volume 168, Issues 1-2 , 1 July2004, pp 155-164.

66. Regular and singular metis finite element models for delamination in composite laminates (incollaboration with Nguyen-Tien Duong), Finite Elements in Analysis and Design, 42 (2006) 650-659.

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67. An extended finite element library (in collaboration with Bordas S., Nguyen-Vinh Phu, DunantC., and Guidoum A), International Journal for Numerical Methods in Engineering, to appear in2006.

68. Interlaninar stresses and delamination of composite laminates under bending and extension (incollaboration with Nguyen-Tien Duong), Structural Engineering & Mechanics, to be appeared in

2006.

69. Computation of interlaminar stresses using Metis elements, (in collaboration with Nguyen-TienDuong), Technical Note in the Structural Engineering & Mechanics, to be appeared in 2006.

70. Using metis model to solve torsion problem of prismatic bar , (in collaboration with Nguyen-Tien Duong), Vietnam Journal of Mechanics (VAST), Vol. 27, No. 3, pp. 149-157, 2005.

71. An object-oriented extended finite element module with embedded automatic mesh database, (incollaboration with Bordas S., Nguyen-Vinh Phu, Dunant C., Bonnaz R., and Guidoum A),International Journal for Numerical Methods in Engineering, submitted September 2005.

72. Architecture trade-offs of embedded meshers for extended finite element methods, (incollaboration with Dunant C., Bordas S., Nguyen-Vinh Phu, and Guidoum A.), Journal Européen deMécanique Numérique, submitted, 2006.

73. A posteriori error estimates for the extended finite element method, (in collaboration withBordas S., Nguyen-Vinh Phu, Dunant C. and Guidoum A), Computer Methods in AppliedMechanics and Engineering, in preparation, 2006.

74. Nodal integration in finite elements, (in collaboration with Nguyen-Xuan Hung, Stéphane

Bordas), International Journal for Numerical Methods in Engineering, under review, 2006.

75. On the convergence of equilibrium element free Galerkin methods, (in collaboration with Bui-Quoc Tinh, Duflot Marc, Bordas S.), International Journal for Numerical Methods in Engineering,submitted.

76. Accuracy estimation for smoothed finite element method in elasticity, (in collaboration with Nguyen-Xuan Hung and S. Bordas), in preparation, 2006.

77. Finite element method with conforming nodal integration: convergence, accuracy, performance,(in collaboration with Nguyen-Xuan Hung and S. Bordas), in preparation, 2006.

78. On the connection between displacement finite element method via strain smoothing technique, (in collaboration with Nguyen-Xuan Hung and S. Bordas), in preparation, 2006.

10.3 Conference proceedings (chronological order)

1. Generalization of the dual approach in the analysis of shells by the finite element method .Presented at NATO seminar LINEC, Lisbon, Portugal, September 1971.

2. Limit analysis of shells of revolution by F.E.M. (in collaboration with D. Ransart), WCOSE

Proceeding (World Congress of IASS on enclosure structures), July 1976, Montreal, Canada, pp.471-479.

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