Ansys History

8/13/2019 Ansys History.

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Erick Alberto Trejo Ziga IA Ansys

Universidad Politcnica Metropolitana

de Hidalgo

Aeronautical engineering

Erick Alberto Trejo ZigaFinite element method

ANSYS

Ing. Celedonio Posadas Carlos

7A

1/Octubre/2013


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Introduction:

Founded in 1970, ANSYS employs more than 2,100 professionals, and many of them are engineers

expert in fields such as finite element analysis, computational fluid dynamics, electronics andelectromagnetics, and design optimization. Our staff includes more masters and Ph.D.-level engineers

than any other simulation provider.

ANSYS is passionate about pushing the limits of world-class technology, all so our customers can turn

their design concepts into successful, innovative products.

The company has beenrecognized as one of the world's most innovative and fastest -growing

companies by prestigious organizations including Business Week and FORTUNE magazines.

Over the years, our steady growth and financial strength reflect our commitment to

innovation and R&D. We reinvest 15 percent of our revenues each year into research to continually

refine our software. We are listed on the NASDAQ stock exchange.

ANSYS develops markets and supportsengineering simulation software used to foresee how product

designs will behave and how manufacturing processes will operate in real-world environments. We

continually advance simulation solutions by, first, developing or acquiring the very best technology;

then integrating it into aunified and customizable simulation platform that allows engineers to

efficiently perform complex simulations involving the interaction of multiple physics; and, finally,

providing system services tomanage simulation processes and data all so engineers and product

developers can spend more time designing and improving products and less time using software and

searching for data.

Engineering simulation is our sole focus. For more than40 years,we have consistently advanced this

technology to meet evolving customer needs.
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Products:

History :

The usage of the Finite Element Method as a tool to solve engineering problems commercially in

industrial applications is quite new. It was used in the late 1950s and early 60s, but not in the

same way as it is today. The calculations were at that time carried out by hand and the method

was force based, not displacement based as we use it today. In the mid 60s, very specialized

computer programs were used to perform the analysis. The 1970s was the time when

commercial programs started to emerge. At first, FEM was limited to expensive mainframecomputers owned by the aeronautics, automotive, defense and nuclear industries. However, in

the late 70s more companies started to use the FEM, and since then, the usage have grown

very rapidly.

Today commercial programs are very powerful and large, complex problems can be solved by

one person on a PC. Many of them have the possibility to handle different kinds of physical

phenomena such as e.g. thermo mechanics, electro mechanics and structural mechanics. One

often talks about multiphysics, were different kinds of physical phenomena are coupled in the

same analysis. There are many available commercial programs, ABAQUS, FLUENT, Comsol

Multiphysics, and ANSYS are just a few examples. A full license of a finite element analysis

program costs usually in the order of several ten thousands Euro. ANSYS is a widely used

commercial general-purpose finite element analysis program.


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Basic program structure :

Treatment of engineering problems basically contains three main parts: create a model, solve

the problem, analyse the results. ANSYS, like many other FE-programs, is also divided into three

main parts (processors) which are called preprocessor,solution processor, postprocessor. Other

software may contain only the preprocessing part or only the postprocessing part. During theanalysis you will communicate with ANSYS via a Graphical User Interface (GUI).

Figure 1: The ANSYS Graphical User Interface (GUI).

1. Utility menu: Here you can access and adjust properties about your session, such as file

controls, listing and graphic controls.

2. Toolbar: Push buttons to commonly used commands.

3. Main menu: Here you can find the processors used when analysing your problem.

4. Graphics window: In the graphics window your model is displayed: geometry, elements,

visualisation of results and so forth.5. Input window: You can type commands in the input window.


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Preprocessor :

Within the preprocessor the model is set up. It includes a number of steps and usually in the

following order:

Build geometry. Depending on whether the problem geometry is one, two or three dimensional,

the geometry consists of creating lines, areas or volumes. These geometries can then, if necessary,

be used to create other geometries by the use of boolean operations. The key idea when building

the geometry like this is to simplify the generation of the element mesh. Hence, this step is

optional but most often used. Nodes and elements can however be created from coordinates only.

Define materials. A material is defined by its material constants. Every element has to be

assigned a particular material.

Generate element mesh. The problem is discretized with nodal points. The nodes are connected

to form finite elements, which together form the material volume. Depending on the problem and

the assumptions that are made, the element type has to be determined. Common element types

are truss, beam, plate, shell and solid elements. Each element type may contain several subtypes,

e.g. 2D 4-noded solid, 3D 20-noded solid elements. Therefore, care has to be taken when the

element type is chosen. The element mesh can in ANSYS be created in several ways. The most

common way is that it is automatically created, however more or less controlled. For example youcan specify a certain number of elements in a specific area, or you can force the mesh generator to

maintain a specific element size within an area. Certain element shapes or sizes are not

recommended and if these limits are violated, a warning will be generated in ANSYS. It is up to the

user to create a mesh which is able to generate results with a sufficient degree of accuracy.

Solution processor:

Here you solve the problem by gathering all specified information about the problem:

Apply loads: Boundary conditions are usually applied on nodes or elements. The prescribed

quantity can for example be force, traction, displacement, moment, rotation. The loads may in

ANSYS also be edited from the preprocessor.

Obtain solution: The solution to the problem can be obtained if the whole problem is defined.

Postprocessor :

Within this part of the analysis you can for example:

Visualise the results: For example plot the deformed shape of the geometry or stresses.

List the results: If you prefer tabular listings or file printouts, it is possible.


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Similar Products:

1. Abaquis

2. Cosmos Xpress

3. Cosmos Works

4. Comsol5. Nastran

6. Patran

7. Caelinux

8. Freefem

9. Openfem

Patran:Patran is a program of computer-aided engineering (CAE), which provides a graphical interface to

pre-and post-processing of finite element models and results. The MacNeal-Schwendler

Corporation (MSC) is the company that sells it.

Since both products are distributed by the same company, is often used as pre-and post-processorof Nastran.

Simplified working sequence comprises:

1. Define a geometry.

2.Finite element meshing this geometry.

3. Assign properties to the finite elements.

4. Define the boundary conditions for each load case.

5.Define external loads applied for each load case.

6.Define the type of analysis.

7.Export an input file for a software finite element analysis and run.

8.Patran Import analysis results.

9. Analyze the results using the graphical interface.

Nastran:is a structural analysis program which applies the finite element method (FEM). It was initially

developed by the NASA1 to late 60s with funding from the U.S. government industia for

aerospace. The MacNeal-Schwendler Corporation (MSC) was one of the main developers

NASTRAN code, which originally was an open source public domain. Currently is The MacNeal-

Schwendler Corporation (MSC), the company that distributes commercial versions of NASTRAN.1

Nastran is written in Fortran and its code consists of more than a million lines.

Nastran is widely used in the aerospace industry.


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COMSOL Multiphysics:

is a software package for analysis and resolution by finite elements for various physical and

engineering applications, especially coupled phenomena, or multiphysics. COMSOL Multiphysics

also offers an extensive and well-managed interface to MATLAB and its toolboxes that provide a

wide variety of programming options, preprocessing and postprocessing. It also provides a similarinterface to COMSOL Script. The packages are cross-platform (Windows, Mac, Linux, Unix.) In

addition to the conventional user interfaces based on physical, COMSOL Multiphysics also allows

for entering coupled systems of partial differential equations (PDE). The EDP can be entered

directly or using the so-called weak form (see the finite element method for a description of weak

formulation).

COMSOL was started based on codes developed by a number of graduate students - Germund

Dahlquist] for a graduate course in the Royal Institute of Technology (KTH) 1 in Stockholm,

Sweden.


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BIBLIOGRAPHY:http://www.ansys.com

http://web.archive.org/web/20090525143359/http://www.fea-

optimization.com/ans_macro/ANS-history.txtIntroduction to a finite element analisys program: ANSYS
http://www.ansys.com/http://www.ansys.com/http://web.archive.org/web/20090525143359/http:/www.fea-optimization.com/ans_macro/ANS-history.txthttp://web.archive.org/web/20090525143359/http:/www.fea-optimization.com/ans_macro/ANS-history.txthttp://web.archive.org/web/20090525143359/http:/www.fea-optimization.com/ans_macro/ANS-history.txthttp://web.archive.org/web/http:/www.hallf.kth.se/kurser/0708/SE2129/Brottmekanik/Ansys%20Tutorials.pdfhttp://web.archive.org/web/http:/www.hallf.kth.se/kurser/0708/SE2129/Brottmekanik/Ansys%20Tutorials.pdfhttp://web.archive.org/web/http:/www.hallf.kth.se/kurser/0708/SE2129/Brottmekanik/Ansys%20Tutorials.pdfhttp://web.archive.org/web/20090525143359/http:/www.fea-optimization.com/ans_macro/ANS-history.txthttp://web.archive.org/web/20090525143359/http:/www.fea-optimization.com/ans_macro/ANS-history.txthttp://www.ansys.com/

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