Proceedingsof the

mumIIIIIIIMIIIIIIIAIIIIIIIC

InternationalModalAnalysisConference

7th InternationalModal Analysis

ConferenceJanuary 30-February 2, 1989

Riviera HotelLas Vegas, Nevada

DIRECTOR:Dominick J. DeMichele

UNION COLLEGEArnold E.S. Gussin, Dean, Graduate and Continuing StudiesRae D'Amelio, Administrator

SOCIETY FOR EXPERIMENTAL MECHANICS, INC.Kenneth A. Galione, Managing Director

Volume n

Sponsored by:Union College

Schenectady, NY 12308Society for Experimental Mechanics, Inc.

Bethel, CT 06801

T A B L E O F C O N T E N T S

VOLUME I

PAGE NO.

GENERAL SESSION

Keynote Address: "Insight, Not Numbers" xvi-xixHavard Void

SESSION 1. EXPERIMENTAL CASE HISTORIES I

Some Things That Work And Some Things That Don't In Experimental Modal Measurements 1-4Rudolph R. Boentgen

Modal Analysis For Nondestructive Testing And Evaluation Of Civil Engineering 5-11Structures

Larry D. Olson, Clifford C. Wright

Modal Analysis And Strain Gage Testing Of Finned-Tube Heat Exchanger 12-16

Chris D. Powell, Steven Goldberger, Richard C. Sohaney

SESSION 2. ANALYTICAL METHODS I

A Procedure For An Improved Reduced System (IRS) Model 17-21John 0'Callahan

Transient Responses Via Modal Synthesis Technique 22-28Eric K. L. Yee, Y. G. Tsuei

System Equivalent Reduction Expansion Process (SEREP) 29-37John 0'Callahan, Peter Avitabile, Robert Riemer

SESSION 3. STRUCTURAL DYNAMICS MODIFICATION I

Mount Property Identif ication—An Optimizational Approach To Dynamic Substructuring 38-44Scott D. Gray, John M. Starkey

Application Of Perturbation Techniques To The Modal Analysis Of A Shaft With 45-51Added Viscoelastic Damping

W. J . Kel ly, J r . , K. K. Stevens

Correction Of Analytical Model Using A Generalized Inverse Technique--Matrix-Type 52-58And Element-Type

De-Wen Zhang, Ying-Ming L i , Fu-Shang Wei

SESSION 4. LINKING ANALYSIS AND TEST I

Vibration Analysis By Using Component Mode Synthesis And Boundary Element Methods 59-62I-Chih Wang, Hecheng Sun, Zhangzhi Cen, Furong Wang

Modal Test And Analysis Of A Wind Turbine Blade 63-70Shayan Pazargadi

Characterization Of Damped Structural Connections For Multi-Component Systems 71-78Charles Lawrence, Arthur A. Huckelbridge

SESSION 5. PROCESSING MODAL DATA I

A Method For Recognizing The Existence Of Bias Error In Measured FRF's 79-82S. G. Braun

Effects Of An Exponential Window On The Damping Coefficient 83-86R. L. Clark, A. L. Wicks, W. J. Becker

Fault Detection In Structures From Changes In Their Modal Parameters 87-94Tom Wolff, Mark Richardson

SESSION 6. MODAL TEST METHODS I

Modal Characteristics Of Swept Plate Flutter Models 95-100G. E. Maddux, R. M. French

Ground Vibration Test Results Of A Jetstar Airplane Using Impulsive Sine 101-111Excitation

Michael W. Kehoe, David F. Voracek

Estimates Of Variance And Confidence Bands For The Three-Channel Frequency 112-118Response Function Estimator

R. E. Cobb, L. D. Mitchell

SESSION 7. LINKING ANALYSIS AND TEST II

Experimental And Finite Element Investigations Of Blade Cracking In A Scrubber 119-123Fan Model

Paul J. Wolff, Patrick A. March

Free Vibration Analysis Of Circular Rings With Slight Irregularities 124-130Jinsun Hong, Jang Moo Lee, Young II Park, Chul Hui Pak

Elastic Normal Modes Of Unrestrained Structures 131-134Tong Fang, Yi-Zhen Li

A Theoretical And Experimental Study Of The Vibrations Of Annular Discs 135-141R. K. Singal, K. Williams, E. Hasegangu-Zanfurescu, H. Wong

A Modal Parameter Identification Approach With Coherent Multiple Random 142-146Excitation

Jiang Jie-Sheng, Gu Song-Nian, Rong Ke-Lin

SESSION 8. MODAL TECHNIQUES FOR ROTATING MACHINERY I

Force Transmissibility Through Rolling Contact Bearings 147-153D. R. Houser, G. L. Kinzel , W. Young, M. Rajab

Performance Evaluation Of Advanced Signature Analysis Techniques 154-158P. Van de Ponseele, H. Van der Auweraer, M. Mergeay

Eigensolution Of Large Conservative Gyroscopic Systems By A Subspace 159-165Forward Iteration Method

Thomas Gmur, Jose F. D. Rodrigues

The Prediction Of Crankshaft Oscillations And Their Effect On Output Torque 166-171

Ramesh Chandra

SESSION 9. MODELING STRUCTURES I

Determination Of Physical System Parameters 172-176Albrecht Eiber

Structural Damping In Frequency And Time Domain 177-185L. Gaul

Dynamic Analyses Of A Four-Spring Support Structure 186-192Michel P. Robert, Han Chung Wang

Non-Linear Mode Shapes And Natural Frequencies Of Fully Clamped Beams And 193-202Plates

R. Benamar, M. M. K. Bennouna, R. G. White

A Method To Model The Dynamic Coupling Of Human Body And Walking Tractor 203-207Jiao Qunying, Dai Shiliang

Earthquake Analysis Of High Voltage C i rcu i t Breaker 208-212V. Ramamurti, L. Balasubramaniam, Amrit Thomas

SESSION 10. FINITE ELEMENT ANALYSIS I

A Proposed Method For Enhanced Eigen-Pair Extraction Using Finite Element 213-219Methods; Part I: Theory

J. Jara-Almonte, L. D. Mitchell

A Proposed Method For Enhanced Eigen-Pair Extraction Using Finite Element 220-226Methods; Part II: Applications

J. Jara-Almonte, L. D. Mitchell

Vibration Reanalysis Of Modified Structures Using Finite Elements 227-232Stanley G. Hutton

Foundation And Application Of The Spectral Condensation Technique For 233-242Dynamic Analysis Of Large Structures

N. B. Roozen, R. F. C. Kriens, A. de Kraker, D. H. van Campen

A Modification Of The Classical Beam Element For Improved Dynamic Analysis 243-245J. Zeischka

Finite Element Analysis And Optimum Design For Automotive Body Structure 246-251Wen Wenyuan, Han Zuxing

A New Method For Updating FE Dynamic Models Through Identified Modal Parameters 252-259Lingmi Zhang, Chaoyong Wang

SESSION 11. NOISE/ACOUSTICS

A Time Domain Modeling Strategy Applied To Forge Hammer Noise 260-267Sudhakar M. Pandit, Alexandra Wai-Ling Ma

Numerical Analysis Of Acoustic And Elasto-Acoustic Problems Using Combined 268-275Finite Element And Boundary Element Methods

J. P. Coyette, E. Dejehet, P. Guisset, K. Fyfe

Acoustic Modal Identification Of Boundary Element Modeling 276-280K. R. Fyfe, J. P. Coyette, H. Wynendaele

The Use Of Coherence Functions For Calculating Mecano-Acoustical Inpedances 281-288J. Leuridan, R. Acquilina, J. Flandrin

A Matrix Perturbation Method In Structural-Acoustic Coupling Modal Analysis 289-293Chen Bingcong, Cheng Yuesun, Zhao Rongbao

A Multichannel Cepstrum Technique For Cancelling The Effects Of Sound Reflections 294-298Li Qi, Chen Zhong-Yi

SESSION 12. MATRIX METHODS FOR MODAL ANALYSIS (TUTORIAL)

A Refined Modal Coupling Technique For Including Residual .Effects Of 299-306Out-Of-Range Modes

A. P. V. Urgueira, D. J. Ewins

The Condition Of Matrix Inversion In Modal Analysis 307-312S. R. Ibrahim

Review Of Matrix Formulations Used In Modal Analysis 313-316Virgil W. Snyder

A Multi-Point Force Appropriation Method Based Upon A Singular Value 317-323Decomposition Approach

Jer-Nan Juang, Jan R. Wright

A Tutorial On Matrix Inversion In Time Domain Modal Analysis 324-330Zhong Liang, Daniel J. Inman

On Numerical Analysis Needs For Modal Analysis 331-334John Brandon

An Introduction To The Singular Value Decomposition Technique (SVD) 335-339N. M. M. Maia

SESSION 13. SYSTEM IDENTIFICATION I

A Direct Two Response Approach For Updating Analytical Dynamic Models Of 340-346Structures With Emphasis On Uniqueness

S. R. Ibrahim, C. Stavrinidis, E. Fissette, 0. Brunner

Practical Suggestions For Modifying Math Models To Correlate With Actual 347-354Modal Test Results

I. U. Ojalvo, T. Ting, D. Pilon, W. Twomey

Nonunique Structural System Identification 355-359Alex Berman

Evaluation Of Predictive Accuracy In Structural Dynamic Models 360-366T. K. Hasselman, Jon D. Chrostowski

A Linearized Method Of Identifying The Dynamic Characteristics Of A 367-370Filmatic Bearing

Zheng Gangtie, Huang Wenhu, Shao Chengxun

SESSION 14. SUBSTRUCTURE

Substructural Simultaneous Iteration: Natural Mode Analysis Of Rotating 371-376Bladed Disc Assemblies

Jin Zhang, Wen-liang Wang, Xiang-jun Chen

A Component Modal Synthesis Technique For The Lateral Vibration Analysis Of 377-383Aircraft Engine Systems

Y. G. Tsuei, Eric K. L. Yee

A Knowledge-Based Substructuring Study For Rotor Dynamics 384-389Sherman S. Wang, Y. G. Tsuei, Eric K. L. Yee

State-Space Modeling Of Axisymmetric Shell Structures 390-396Massoud S. Tavakoli, Rajendra Singh

Implementation Of Dynamic Substructural Method In Vibration Coupling Problem 397-401Caused By Interaction Between Machinery And Ship Hull Structure

Yu Yao-Zhi, Guan Wei

SESSION 15. LINKING ANALYSIS AND TEST III

Dynamic Response Evaluation Of Large Diameter Valve Assemblies 402-408H. P. Bausch, Vladimir Glozman

Test/Analysis Correlation Of The Centrifugal Cooling Fan For An Electric 409-415Traction Motor

S. Epifanio, V. Mantel! i, A. Rebora

Dynamic Optimization Applied To Test/Analysis Correlation 416-423Robert Haubrock, Steven Crowley, Peter Ward

Practical Application Of Experimental And Mathematical Modal Analysis On 424-430Machine Tools

Radomir Albijanic, Milisav Kalajdzic

The Synthetic Technique Of Analytical And Experimental Mode 431-436Xu Qingyu, Li Jing

SESSION 16. EXPERIMENTAL CASE HISTORIES II

Comparisons Of The Analytical And Experimental Modes Of A Model Airplane 437-441Using Finite Element Analysis And Multi-Reference Testing

Les Goldberg

Ambient Vibration Test On A 55 Meter Reactor 442-446Ciro Soto, Mauricia E. Martinez

Case Studies: Modal Analysis For Design Improvements Of Two Industrial 447-452Spatial Sheet Forming And Feeding Machines

Cemil Bagci

Added Mass For Plates Partially Submerged In Water 453-458Brian W. Lieb, Richard P. Glasser, Ariel P. Jacala

Vibration Analysis And Testing Of A Vehicular Seat Frame 459-465Mohamed Khalid Abdelhamid

SESSION 17. MODAL TECHNIQUES FOR ROTATING MACHINERY II

Modal Testing Of An Operating Rotor System Using A Structural Dynamics Approach 466-473P. J. Rogers, D. J. Ewins

Modeling An Actively Controlled Vertical Rotor 474-478Ann E. Reimers, Edward P. Gargiulo

Rotor Model Adjusting By Unbalance Response Curve-Fitting 479-484Jose R. F. Arruda

On The Solution Of Quadratic Eigenvalue Problems In Structural Dynamic 485-489Analysis

T. S. Zheng, W. M. Liu, Z. B. Cai

Experimental Study On The Vibration Behaviour Of A Rotor-Bearing System With 490-495Solid-Material Dampers

Jin-Quan Ren, You-Bai Xie

SESSION 18. INSTRUMENTATION AND TRANSDUCERS

Benefits And Behavior Of A Simultaneous Multiple Sensor Calibrator 496-504Michael J. Lally, Patrick S. Barney, David L. Brown

The Effects Of Transducer Cross-Axis Sensitivity In Modal Analysis 505-511Sangbo Han, Kenneth G. McConnell

The Measurement Of The Spurious Frequency Of Seismic Geophone 512-515Lin Baoyang

Intelligent Instrumentation For Measuring The Dynamic Accuracy And Fault 516-521Diagnosis Of The Gear Cutting Machine Drivetrain

Qin Shuren, Lei Jiyao

SESSION 19. ANALYTICAL METHODS II

On A Combined Deterministic And Nonstationary Random Analysis 522-528Lance F. Guymon, Dieter G. Krausser

A Higher Order Generalization Of The Guyan Reduction Method 529-532Paul Conti

Complex Mode Indication Function And Its Applications To Spatial Domain 533-540Parameter Estimation

C. Y. Shih, Y. G. Tsuei, R. J. Allemang, D. L. Brown

Vibration Of A Guyed Tower 541-545R. R. Little, G. R. Frederick, K. M. Tarhini

A Formula For Calculating The Acoustic Noise Of Lathe And Milling Machine 546-550Headstock

Xia Xu, Shie-Jie Wang, Zhi-Qin Li

Matrix Perturbation Method And Theory For Reanalyses Of Linear Generalized 551-556Eigenvalue Problems

Zhendong Feng, Zhenhua Lu

SESSION 20. STRUCTURAL DYNAMICS MODIFICATION II

The Raleigh-Ritz Method In Structural Modifications 557-561Y. Ram, S. G. Braun

Structural Dynamic Model Modification Using Vibration Test Data 562-567F.-S. Wei

Residual Mobilities And Structural Dynamic Modifications 568-574Richard C. Sohaney, Dominique Bonnecase

Simultaneous Versus Sequential Modifications 575-577Charles W. Johnson, Virgil W. Snyder

Determination Of Residual Flexibility And Its Effective Use In Structural 578-583Modification

Nobuyuki Okubo, Tomoyasu Matsuzaki

The Multi-Terms Sensitivity Analysis Of Structure Modification 584-588Jinhan Ju, Zhandi Xu

SESSION 21. LINKING ANALYSIS AND TEST IV

System Model Development Using Analytically Enhanced Experimental Data 589-595Peter Avitabile, John 0'Callahan, John Milani, Eddy Dong-Rong Pan

Development Of An Automatic Mathematical Model Updating Program 596-602E. Dascotte, P. Vanhonacker

Experimental Determination Of Rigid Body Inertia Properties 603-606Y. S. Wei, Jim Reis

Modal Parameter Estimation Of A Large Missile From Multi-Shaker Random 607-611Excitation Test

Fan Zijie, Liu Ruiyan, Ji Nan

A Study On The CAD For Extension Of Sweet Spot Of The Tennis Racket 612-618Jae-Eung Oh, Kwang-Sic Kim, Ho Park

SESSION 22. PROCESSING MODAL DATA II

Estimation Of Frequency Response Functions In The Presence Of Correlated Signal 619-624Contaminants

James P. De Clerck, Chuck Van Karsen, William Shapton

On The Application Of Forsythe Orthogonal Polynomials For Global Modal 625-630Parameter Estimation

Man-Cheol Han, A. L. Wicks

Estimation Of Real Modes From FRF's Via Direct Parameter Identification 631-636F. Lembregts, M. Brughmans

Evaluation Of Dynamic Responses Of The Space Shuttle Rocket Motor Static Firing 637-642David L. Hunt, Charles W. Engelhardt, Craig F. Chang, Donald R. Mason

Space Shuttle Solid Rocket Motor Linearity Identification And Modal Frequency 643-649Detection Using Static Firing Data

Craig F. Chang, Donald R. Mason

A Robust Modal Correlation Procedure For Large-Scale Structures 650-656T. Ting, I. Ojalvo, T. L. Chen

SESSION 23. MODAL TEST METHODS II

Hubble Space Telescope-Space Shuttle Interface Dynamic Verification Test 657-663Mark A. Blair, Nagarjuna Vadlamudi

Determination Of Fixed Base Natural Frequencies Of Dual Foundation In-Situ 664-671Equipment By Fourier Transform Methods

Candice J. Woeltjen, Patrick F. Cunniff

A Comparison Of Fixed-Base And Driven-Base Modal Testing Of An Electronics 672-679Package

Thomas G. Carne, David R. Martinez, Arlo R. Nord

Several Theoretical Problems In Experimental Modal Analysis 680-685Chen Xiaoyue, Guan Dihua

SESSION 24. MODELING STRUCTURES II

Simulation Of A Flexible Link Manipulator, Actuated By DC-Motors 686-694H. Magits, P. Sas

Parametric Identification Of Non-Linear Mechanical Systems From Measurements 695-703In Time And Frequency Domain

P. Vanherck, K. Wyckaert, P. Sas, H. Van Brussel

Experimental Verification Of Damping Mechanisms In A Composite Beam 704-710Harley H. Cudney, Daniel J. Inman

A Method Of Determining Rigid Body Inertia Properties < 711-719Masao Furusawa

Application Of Modal Analysis To Modeling The Dynamics Of a Part Clamped 720-726On A Lathe

F. Ismail, S. Ighani

VOLUME II

SESSION 25. SPACE STRUCTURES

Obtaining Consistent Modal Parameters From Tuned-Forces Narrow-Band Sweeps Ill-TilK. Muhlbauer, S. Dillinger

Dynamic Verification Of The Space Shuttle T-97 SRM Static Firing Test Stand 733-741Ralph D. Brillhart, Dan Kammer, David L. Hunt Gary Hurst

Modal Selection In Structural Dynamics 742-749Paul A. Blelloch, Kelly S. Carney

Experimental Modal Surveys On The Aluminum Beam Expander Structure (ABES) 750-756David Founds, Philip Reamy

MAVIS Flight Load Simulation 757-7640. Brunner, Klaus Eckhardt

Sensitivity Analysis Of Structural Frequency Response Functions 765-771A. Girard, N. A. Roy, L. P. Bugeat

Identification Of Local Modes Using Modal Mass Distributions 772-776Chaur-Ming Chou, Richard S. Pappa

SESSION 26. ANALYTICAL METHODS III

Effects Of Various Model Reduction Techniques On Computed System Response 777-785Peter Avitabile, John 0'Callahan, Eddy Dong-Rong Pan

On The Fundamental Frequency Of Rectangular Simply Supported Symmetric 786-789Laminated Plates

Robert Reiss, Bo Qian

A Comparison Between Monophase And Complex Representation Of Operating Shapes 790-796J. Pan, C. Y. Shih, R. Allemang

Seismic Qualification Of Electrical Systems 797-804C. G. Ranganath, A. Salehpour

The Complex Mode Theory Of A Non-Self-Adjoint Vibration System 805-808Hong Zhongyu, Zheng Wangan

SESSION 27. PROCESSING MODAL DATA III

Estimation Of Multiple Input/Output Frequency Response Functions In The 809-816Presence Of Uncorrelated Noise

Nasser Moshrefi, William R. Shapton, Chuck Van Karsen, Alfred L. Wicks

The Influence Of Frequency Response Function Estimation Method On Modal 817-821Parameter Estimators

A. L. Wicks, Man-Cheol Han

Pitfalls Of Mass Orthogonality Check 822-829David Fei-Hon Chu, Jeanne M. DeBroy, Jialing Yang

Correction Of Modal Scaling Factors Using Mass Perturbation Technique 830-835Max L. Wei, Qiang Zhang

SESSION 28. DYNAMICS OF STRUCTURAL JOINTS

Analysis Of Flexible Structures With Nonlinear Joints 836-842Aldo A. Ferri

Force State Mapping Using Experimental Data 843-849Norman F. Hunter, Jr., Thomas Paez, Dan L. Gregory

Model Adjusting Of Structures With Mechanical Joints Using Modal Synthesis 850-856Jose Roberto de F. Arruda, Jose Maria C. dos Santo

SESSION 29. VEHICULAR

Experimental Modal Models Development Of I.C. Mechanical Components And Their 857-866Assembling

P. C. Marucchi-Chierro, G. Ruspa

A Mathematical Model Of Road Excitation And Its Interaction With A Non Linear 867-873Model Of A Car

E. Pellegrino, U. Tornar

Flutter Analysis On A Non-Linear Wing Model 874-877Francesca M. Cura

A General Purpose Formalism For Lumped Parameter Mechanical Systems With 878-883Application To Vehicle Dynamics

James Alanoly, Seshadri Sankar

Optimization Of Automotive Engine Mounting Parameters With Forbidden Bands 884-888Of Multiple Modal Frequencies

Zhendong Feng, Jianfu Hou

An Improvement Of Dynamic Stress Of Motor Vehicle Frame Using Analytical And 889-893Optimization Method

Wang Lie, Di Yuanzheng, Zhuge Hongcheng

SESSION 30. NONINTRUSIVE TRANSDUCERS

A Noncontacting Excitation Technique For Modal Analysis 894-900Mark E. Patton, Martin W. Trethewey

Spatial Dynamic Accuracy Of 3-Dimensional Coordinate Measurement Machine Using 901-907Laser Interferometer

Nobuyuki Okubo, Takeshi Toi

Application Of Laser Vibrometry And A Resonance Technique To The Complex 908-912Modulus Of Elastomeric Materials

Timothy E. McDevitt, Alan D. Stuart

Non-Contact Modal Analysis Of A Force To Frequency Transducer 913-918John P. Hanley, Curtis Kissinger

A Scanning Laser Doppler Vibrometer For Modal Testing 919-925P. Sriram, J. I. Craig, S. Hanagud

SESSION 31. EXPERIMENTAL TECHNIQUES I

Experimental Study Of Active Vibration Control Of Flexible Structures Subject To 926-933Forced Vibration

Q. Zhang, S. Shelley, X. N. Luo, R. J. Allemang, D. L. Brown, G. L. Slater

Moving Coil Printer Actuator Dynamics With Real-Time Control 934-939Jeane S. C. Chen, Li-Cheng R. Zai, Han Chung Wang

Modal Analysis Using Strobed Holographic Interferometry 940-946A. K. Mitchell, C. R. Hazel 1

Experimental Modal Analysis Of A Completely Free Square Plate 947-951G. E. Maddux

Advances Of A Spatial Sine Testing System 952-957Anthony J. Severyn, Patrick S. Barney, Robert W. Rost, David L. Brown

Power Flow Measurements On A Beam With Small Localized Damping 958-964Gerard P. Carroll, Joseph A. Clark

SESSION 32. STRUCTURAL DYNAMICS MODIFICATION III

Comparison Of Analytical And Experimental Rib Stiffener Modifications To A 965-973Structure

Peter Wallack, Paul Skoog, Mark Richardson

Solution Of Viscously Damped Linear Systems Using A Set Of Load-Dependent 974-980Vectors

Harn C. Chen, Robert L. Taylor

Numerical Study Of An Identification Scheme Of Distributed-Physical-Parameter 981-987Vibration System

Xie Jingbo, Cheng Yaodong, Tong Zhongfang

Improving The Accuracy Of Guyan Reduction By The Perturbation Technique 988-991Zhao-Chang Zheng, Yong Hu

SESSION 33. MACHINERY DIAGNOSTICS I

Expert System Techniques Applied To Automated Machinery Diagnostics Using 992-996Vibration Analysis

H. El Attal, Aziz E. El Sayed, A. El Khatib

Instrumentation For Machinery Diagnostics And Its Application 997-1001Gunnar Rasmussen

Automated Diagnostics And Vibration Analysis In Machinery Health Monitoring 1002-1008Paul Y. Kim

PREVIEW--£REdictive Vibration _Inforraation For Equipment Welfare 1009-1015D. L. Nower, W. D. Strunk, R. M. Tuft

Statistical Moment Analysis As A Means Of Surface Damage Detection 1016-1021H. R. Martin

Monitoring The Condition Of Drills By Means Of Vibration 1022-1027

Z. Reif, H. K. Lau,

SESSION 34. MODAL TEST METHODS III

Experience With Identification Of Momentum Coefficients And Modal 1028-1036Identity Parameters

Y. Soucy, R. K. Singal, F. R. VigneronFactors To Consider When Selecting A Modal Excitation Energy Source 1037-1043

Edward L. Peterson, William M. RusenA New Time-Domain Moving-Average Method For Modal Parameter Identification 1044-1046

Zheng Gangtie, Huang Wenhu, Shao Chengxun

On The Modelling Method Of Joint Surfaces Of Structure 1047-1054Zhang Si, Shi Jinfei

Modal Analysis Using The Fully-Coherent Multi-Point Random Excitation Technique 1055-1061Lei Ji Yao, Jiang He Sen

Comparison Of Modal Test Methods On The Gear-Hobbing Machine 1062-1065Lin Baoyang, Lei Jiyao

SESSION 35. LINKING ANALYSIS AND TEST V

Experimental Modal And Dynamic Finite Element Analysis Of Tractor Transmission 1066-1071Case

Qingzu Su, Qionghe Xu, Jiachang Weng, Minghui Ji

Modal Analysis Of Gear Housing And Mounts 1072-1078Teik C. Lim, Rajendra Singh, James J. Zakrajsek

Structural Dynamics Considerations For Structural Control 1079-1086J. P. Lauffer, J. J. Allen, L. D. Peterson

Inverse Perturbation: From Incomplete Modal Data To Structural Parameters 1087-1092Cai Zebiao, Zheng Tiesheng

Analog And Digital Simulation Of The Nonlinear Frequency Response 1093-1099Characteristics Of An Impact Pair

Robert J. Comparin, Rajendra Singh

SESSION 36. ANALYTICAL METHODS IV

Research On The Change Of Modal Parameters Of A Beam Resulted From A Slot 1100-1108W. Q. Feng, K. Y. Zhang, X. Y. Wu

Comparison Of System Characteristics Using Various Model Reduction Techniques 1109-1115Peter Avitabile, John 0'Callahan, John Milani

Finite Element Eigenanalysis Of Front Wheel Drive 1116-1122Katsumi Semba, Katsuo Takahashi, Yasuhiko Sato

Free Response To An Initial Displacement For A S.D.O.F. System In The 1123-1128Presence Of Dry Friction And Viscous Damping

Charles Andre de Hillerin

A Banded Cantilever Model For Spaced Open-Systems Using CAD 1129-1136R. Hussein, M. Enamul Haque

Topological Optimization of Machine Tool Structures By Fuzzy Mathematical 1137-1141Methods

Wen Wenyuan, Xu Chao

SESSION 37. SYSTEM IDENTIFICATION II

Determination Of Modal And System Parameters From Response Transfer Functions 1142-1149Donald J. Benson, T. C. Huang

Transfer Orbit Stage Modal Survey, Part 1, Measurement Of Free-Free Modes 1150-1156And Residual Flexibility

Ralph D. Brillhart, David L. Hunt, Christopher C. Flanigan,Roger Guinn, Robert Hull

Transfer Orbit Stage Modal Survey, Part 2, Model Correlation 1157-1161Ralph D. Brillhart, David L. Hunt, Christopher C. Flanigan,Roger Guinn, Robert Hull

Finite Element Model Optimization Using Diagonal Mass Matrix 1162-1166B. P. Wang, Y. D. Tseng

A Modal Parameter Identification Technique And Its Application To Large 1167-1173Complex Structures With Multiple Steady Sinusoidal Excitation

Jiang Jie-Sheng, Gu Song-Nian, Wang Yan-Ju, Yao Qi-Hang

SESSION 3 8 . ANALYTICAL METHODS V

Some Concepts For Spatial Sine Testing Parameter Ident i f icat ion 1174-1178F. Deblauwe, D. Brown, H. Void

On The New Definit ion And Additional Applications Of Coherence Function 1179-1184Lingmi Zhang, Yingxian Yao

A Matrix Part i t ion Method For Modal Reanalysis 1185-1191P. Level, A. Oudshoorn, Y. Ravalard, J . Oudin

Vibration Analysis Of Aircraf t Panels 1192-1198Hu Xuanli, Dai Depei

Forced Response Of Rotating Thin Annular Plates To Moving Concentrated 1199-1204Transverse Loads With Sudden Changes In Radial Position

G. N. Weisensel. A. L. Schlack, Jr.

Eigenproblem Formulation And Solution For Nonproportionally Damped Continuous 1205-1211Beams

Glen Prater, Rajendra Singh

Difference Method For Frequency Design Of Structure 1212-1216Baijing Qiu, Zhengzhong Sang

SESSION 39. LINKING ANALYSIS AND TEST VI

Evaluation Of Computed Normal Modes From Measured Complex Modes 1217-1220L. Hamidi, M. Massoud, J.-G. Beliveau

Understanding The Effects Of Damping Systems On Resonant Plates 1221-1226R. Glenn Bell

Applications Of Design Optimization Using MSC/NASTRAN 1227-1230Ken Blakely

Correction Of Finite Element Model Via Selected Physical Parameters 1231-1238Jim J . C. Wei, Qiang Zhang, Randall J . Allemang, Max L. Wei

Test/Analysis Model Correlation For The Gamma Ray Observatory 1239-1247Yung-Tseng Chung, Stepan S. Simonian

Research On Dynamic Characteristics Of Guideways Of Machine Tool 1248-1253

Fan Si-Zheng, Zhang Si

SESSION 4 0 . PROCESSING MODAL DATA IV

Computer Graphics For Modal Data Processing 1254-1260Steven H.-Y. Lai

Dynamic Formulation Of Linkage-Structure Coupled Systems Using Free-Interface 1261-1264Method In Structural Dynamics

Tian Huang, Ziping Zeng, Haoying Xiang, Yanshen Xu, Zemin Peng

From Damping Type Ident i f icat ion To Mode Parameters Ident i f icat ion 1265-1270Kuinian L i , Minto Xu

Frequency Domain Direct Parameter Ident i f icat ion For Modal Analysis: 1271-1277State Space Formulation

F. Lembregts, J . Leuridan, H. Van Brussel

A New Method For The Ident i f icat ion Of Transfer Functions Unaffected By 1278-1284Phase Noises

Yongkai Chen, Dajin Guo, Yaodong Cheng

The Principle And Techniques Of Experimental Strain Modal Analysis 1285-1289Li Debao, Zhuge Hongcheng, Wang Bo

SESSION 41. EXPERIMENTAL TECHNIQUES II

A Global Approach To The Acquisition And Analysis Of Harmonic Waveforms 1290-1299H. Van der Auweraer, P. Van de Ponseele, M. Mergeay, U. Vandeurzen

Angular Acceleration Measurements Of A Free-Free Beam 1300-1304R. A. L. Rorrer, A. L. Wicks, J. Williams

A Comparison Of Time Domain Spectral Estimation Techniques 1305-1311A. L. Wicks, K. B. Patton

Frequency Response Function Estimators For Non-Contacting Stress Measurement 1312-1318Under Random Loading

N. Harwood, W. M. Cummings

The Use Of Modal Parameters In The Prediction Of Buckling Of Externally 1319-1328Pressurized Shells: Part I—Analytical Considerations

Milton H. Schneider, Jr., John J. Tracy

The Use Of Modal Parameters In The Prediction Of Buckling Of Externally 1329-1335Pressurized Shells: Part II--Experiment Description

Dan R. Powers, Patrick H. Driskill

SESSION 42. NON-LINEAR STRUCTURES

A Simple Method Of Accurately Determining The Apparent Damping In Non-Linear 1336-1346Structures

K. S. Mohammad, G. R. Tomlinson

Application Of The Restoring Force Surface Method To Nonlinear Elements 1347-1355K. Worden, G. R. Tomlinson

Understanding Multi Degree Of Freedom Nonlinear Systems Via Higher Order 1356-1364Frequency Response Functions

S. J. Gifford, G. R. Tomlinson

Envelope And Instantaneous Phase Characterisation Of Nonlinear System Response 1365-1371P. G. Adamopoulos, W. Fong, J. K. Hammond

Using Volterra Model With Impact Excitation: A Simple Solution To Identify 1372-1378Nonlinearities

A. Frachebourg

Extension Of Modal Analysis To Non-Linear Systems (Possibility, Mathematical 1379-1385Models, Limitation )

T. Vinh, H. Liu

Application Of A New Hilbert Transform Method To Nonlinearity Identification 1386-1393K. Steven Kim, Young S. Shin

SESSION 43. FINITE ELEMENT ANALYSIS II

The Solution Of The Eigenproblem Arising In The Finite Dynamic Element Analysis 1394-1401By A Subspace Iteration Method

Thomas E. C. Gmur, Jose F. D. Rodrigues

Finite Element Analysis Of Tapered Rotors 1402-1407S. L. Edney, C. H. J. Fox, E. J. Williams

Vibration Modal Analysis Of QCZ3 Bogie Cast Steel Frame Of A Railway Freight Car 1408-1414Zhiying Luo, Qiaosheng Yang, Xiuchun Luo, Guanwei Luo

Sensitivity Of Substructuring Methods To Experimental Errors 1415-1420M. Angel ides, F. Charron, L. Donato

The Application Of Sub-Structuring Techniques To Duct Acoustic Problems 1421-1426A. Craggs

Modal Analysis Of A Pneumatic Tyre And Dynamic Simulation By A Substructuring 1427-1433Method

Anne Clair Deneuvy

SESSION 44. SEISMIC TOPICS

Seismic Design Of Nuclear Power Plants In Japan 1434-1440T. W. Hsu

Dynamics Of Soil-Inservice Utility Poles Interaction 1441-1447Rafaat Hussein

Damping Of Soils Determined By An Improved FFT Technique 1448-1452

Farshad Amini, Lawrence C. Rude

SESSION 45. EXPERIMENTAL TECHNIQUES III

Application Of Strain Modal Testing To Real Structures 1453-14640. Bernasconi, D. J. Ewins

Estimation Of Uncorrelated Content Using A Three-Channel Measurement 1465-1470System—Experimental Results

L. D. Mitchell , R. E. Cobb

Anti-Filtering Correcting Of Measuring Signal 1471-1474Kuinian Li, Minto Xu

Experimental Assessment Of Damping In Reinforced Concrete Shear Wall Structures 1475-1481Charles R. Farrar, Joel G. Bennett

SESSION 46. LINKING ANALYSIS AND TEST VII

A Study On The Interior Noise Of A Passenger Car 1482-1488Myung Ho Sung, Jang Moo Lee, Seock Hyun Kim, Joong Hee Kim

Analysis And Test On The Digital Optimal Control Of A Flexible Robot Arm 1489-1495Vibration

Young-Pil Park, Seung-Ho Kim, Young-Kyun Ha, Hyeok-Sung Park

A Study On The Squeeze Film Damper Of A Rotor-Bearing System For High Speed 1496-1500Operation

Suk-Chul Yoon, Dong-Chul Han

Global Nondestructive Damage Detection In Composite Structures 1501-1507Duane R. Sanders, Norris Stubbs, Young I. Kim

Case Study Of Fracture Of A Mechanical Component Due To Resonance Fatigue 1508-1515D. Vandepitte, P. Sas, C. Liefooghe, F. Seys

SESSION 47. DAMPING

Vibration Response Of Constrained Viscoelastically Damped Plates: Analyses 1516-1520And Experiments

Young S. Shin, Gerald J. Maurer

Modal Synthesis Procedure For Nonproportional Damped Systems 1521-1529Li Li, W. Stuhler

The Design Of Damping Structure And Structural Modifications 1530-1532Liu Ai-Qun, Li Qi, Wand Wen Da

Active Damping Of Residual Robot Vibrations; A Modal Approach 1533-1539Y. Stepanenko

SESSION 48. ANALYTICAL METHODS VI

Vibration Reduction, Sensitivity Analysis And Structure Redesign In Dynamical 1540-1546Systems

Jinsong Zeng, Shi 1 ing Huang

The Effect Of Data Errors On Inverse Plane Frequency Response Algorithms 1547-1550John Brandon

Effect Of Nonlinearity On Natural Frequencies Of Structures 1551-1553Kamal A. F. Moustafa, Mohamed A. El-Gebeily

Parameter Ident i f ica t ion Of Structural Models By Means Of Extended Kalman 1554-1560F i l t e r Algorithm

Zhi-Wen Bao, Wen-Yue Shi

A Recursive Computation Of Generalized Inverse Method In Structural Modal 1561-1565Parameters Ident i f i ca t ion

Wang Lip ing, Wang Ligong

Some New Methods Of Modal Analysis For Uncertain Dynamic Systems 1566-1570

Xu Sh i j i e , Huang Wenhu, Shao Chengxun

SESSION 4 9 . MACHINERY DIAGNOSTICS I I

Applications Of Spectrograms To Practical Signature Analysis Problems 1571-1576Francis H. K. Chen

Determination And Ver i f icat ion Of Optimum Operating Conditions Of High Speed 1577-1581Machining Stations Using Modal And Fini te Element Analysis

R. G. Gaspar, H. W. M i l l e r , Jimi S. Y. Tjong

A Peak Classi f icat ion Technique In Digi ta l Spectral Analysis 1582-1586Jose R. Franca Arruda, Edson Godoy

Application Of the ML Spectral Estimates For Ident i f i ca t ion Of Defects In 1587-1590Rotating Machinery

P. J . Sherman, K. N. Lou

Dynamic Testing And Analysis Of Geothermal Turbine Blades 1591-1595Carl D. Paquin, Mitty C. Plummer

A Knowledge Based Diagnostic System For Hydraulic Powered Machines 1596-1603

Hsin-Yi Lai

ADDENDUM

Nonlinear Modal Identificatoin Using Nyquist Plot Distortions 1605-1610

Lisa K. Downs, Gerard C.PardoenAcoustic Response Analysis Of Large Space Structures (Presented at IMAC-VI) 1611-1615

F. Mercier, D. Gangloff, A. Mamode

The Mathematical Modelling & Identification Of Dynamical Parameter Of Fixed 1616-1626Joints In The Machine Tool

Zhao, Zhi-Feng, Jia, Zi-qiang, Chai Zhong-hua, Cheng Yao-dong,Lu Nai-yan, Sun Yue-ming

The Technique Of Extraction Of Structural Parameters From Experimental Forced 1627-1633Vibration Data

W. F. Tsang, E. Rider