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University of Alberta - ANSYS Tutorials

ANSYS is a general purpose finite element modeling package for numerically solving a wide variety of mechanical

problems. These problems include: static/dynamic structural analysis (both linear and non-linear), heat transfer and

fluid problems, as well as acoustic and electromagnetic problems. Most of these tutorials have been created using

ANSYS 7.0, therefore, make note of small changes in the menu structure if you are using an older or newer version.

This web site has been organized into the following six sections.

n ANSYS Utilities

An introduction to using ANSYS. This includes a quick explanation of the stages of analysis, how to start

ANSYS, the use of the windows in ANSYS, convergence testing, saving/restoring jobs, and working with

Pro/E.

n Basic Tutorials

Detailed tutorials outlining basic structural analysis using ANSYS. It is recommended that you complete

these tutorials in order as each tutorial builds upon skills taught in previous examples.

n Intermediate Tutorials

Complex skills such as dynamic analysis and nonlinearities are explored in this section. It is recommended

that you have completed the Basic Tutorials prior to attempting these tutorials.

n Advanced Tutorials

Advanced skills such as substructuring and optimization are explored in this section. It is recommended that

you have completed the Basic Tutorials prior to attempting these tutorials.

n Postprocessing Tutorials

Postprocessing tools available in ANSYS such as X-sectional views of the geometry are shown in this

section. It is recommended that you have completed the Basic Tutorials prior to attempting these tutorials.

n Command Line Files

Example problems solved using command line coding only, in addition to several files to help you to

generate your own command line files.

ANSYS Utilities

An introduction to using ANSYS, including a quick explanation of the stages of analysis, how to start ANSYS, and

the use of the windows in ANSYS, and using Pro/ENGINEER with ANSYS.

l Introduction to Finite Element Analysis

A brief introduction of the 3 stages involved in finite element analysis.

l Starting up ANSYS

How to start ANSYS using windows NT and Unix X-Windows.

l ANSYS Environment

An introduction to the windows used in ANSYS

l ANSYS Interface

An explanation of the Graphic User Interface (GUI) in comparison to the command file approach.

l Convergence Testing

This file can help you to determine how small your meshing elements need to be before you can trust the

solution.

l Saving/Restoring Jobs

Description of how to save your work in ANSYS and how to resume a previously saved job.

l ANSYS Files

Definitions of the different files created by ANSYS.

l Printing Results

Saving data and figures generated in ANSYS.

l Working with Pro Engineer

A description of how to export geometry from Pro/E into ANSYS.

 

Basic Tutorials

The following documents will lead you through several example problems using ANSYS. ANSYS 7.0 was used to

create some of these tutorials while ANSYS 5.7.1 was used to create others, therefore, if you are using a different

version of ANSYS make note of changes in the menu structure. Complete these tutorials in order as each tutorial will

build on skills taught in the previous example.

l Two Dimensional Truss

Basic functions will be shown in detail to provide you with a general knowledge of how to use ANSYS. This

tutorial should take approximately an hour and a half to complete.

l Bicycle Space Frame

Intermediate ANSYS functions will be shown in detail to provide you with a more general understanding of

how to use ANSYS. This tutorial should take approximately an hour and a half to complete.

l Plane Stress Bracket

Boolean operations, plane stress and uniform pressure loading will be introduced in the creation and analysis of

this 2-Dimensional object.

l Solid Modeling

This tutorial will introduce techniques such as filleting, extrusion, copying and working plane orienation to

create 3-Dimensional objects.

Intermediate Tutorials

The majority of these examples are simple verification problems to show you how to use the intermediate techniques

in ANSYS. You may be using a different version of ANSYS than what was used to create these tutorials, therefore,

make note of small changes in the menu structure. These tutorials can be completed in any order, however, it is

expected that you have completed the Basic Tutorials before attempting these.

l Effect of Self Weight

Incorporating the weight of an object into the finite element analysis is shown in this simple cantilever beam

example.

l Distributed Loading

The application of distributed loads and the use of element tables to extract data is expalined in this tutorial.

l NonLinear Analysis

A large moment is applied to the end of a cantilever beam to explore Geometric Nonlinear behaviour (large

deformations). There is also an associated tutorial for an explanation of the Graphical Solution Tracking

(GST) plot.

l Buckling

In this tutorial both the Eigenvalue and Nonlinear methods are used to solve a simple buckling problem.

l NonLinear Materials

The purpose of the tutorial is to describe how to include material nonlinearities in an ANSYS model.

l Dynamic Analysis

These tutorial explore the dynamic analyis capabilities of ANSYS. Modal, Harmonic, and Transient

Analyses are shown in detail.

l Thermal Examples

Analysis of a pure conduction, a mixed convection/conduction/insulated boundary condition example, and a

transient heat conduction analysis.

Modelling Using Axisymmetry

Utilizing axisymmetry to model a 3-D structure in 2-D to reduce computational time.

 

Advanced Tutorials

The majority of these examples are simple verification problems to show you how to use the more advanced

techniques in ANSYS. You may be using a different version of ANSYS than what was used to create these tutorials,

therefore, make note of small changes in the menu structure. These tutorials can be completed in any order, however,

it is expected that you have completed the Basic Tutorials.

l Springs and Joints

The creation of models with multiple elements types will be explored in this tutorial. Additionally, elements

COMBIN7 and COMBIN14 will be explained as well as the use of parameters to store data.

l Design Optimization

The use of Design Optimization in ANSYS is used to solve for unknown parameters of a beam.

l Substructuring

The use of Substructuring in ANSYS is used to solve a simple problem.

l Coupled Structural/Thermal Analysis

The use of ANSYS physics environments to solve a simple structural/thermal problem.

l Using P-Elements

The stress distribution of a model is solved using p-elements and compared to h-elements.

l Melting Using Element Death

Using element death to model a volume melting.

l Contact Elements

Model of two beams coming into contact with each other.

l ANSYS Parametric Design Language

Design a truss using parametric variables.

Postprocessing Tutorials

These tutorials were created to show some of the tools available in ANSYS for postprocessing. You may be using a

different version of ANSYS than what was used to create these tutorials, therefore, make note of small changes in the

menu structure. These tutorials can be completed in any order, however, it is expected that you have completed the

Basic Tutorials.

l Viewing Cross Sectional Results

The method to view cross sectional results for a volume are shown in this tutorial.

l Advanced X-Sectional Results: Using Paths to Post Process Results

The purpose of this tutorial is to create and use 'paths' to provide extra detail during post processing.

l Data Plotting: Using Tables to Post Process Results

The purpose of this tutorial is to outline the steps required to plot results using tables, a special type of array.

l Changing Graphical Properties

This tutorial outlines some of the basic graphical changes that can be made to the main screen and model.

Command Line Files

The following files should help you to generate your own command line files.

l Creating Command Files

Directions on generating and running command files.

l ANSYS Command File Programming Features

This file shows some of the commonly used programming features in the ANSYS command file language

known as ADPL (ANSYS Parametric Design Language). Prompting the user for parameters, performing

calculations with paramaters and control structures are illustrated.

The following files include some example problems that have been created using command line coding.

Basic Tutorials This set of command line codes are from the Basic Tutorial section.

Intermediate Tutorials This set of command line codes are from the Intermediate Tutorial section.

Advanced Tutorials This set of command line codes are from the Advanced Tutorial section.

PostProc Tutorials This set of command line codes are from the PostProc Tutorial section.

Radiation Analysis A simple radiation heat transfer between concentric cylinders.

 

Introduction

ANSYS is a general purpose finite element modeling package for numerically solving a wide variety of mechanical problems. These

problems include: static/dynamic structural analysis (both linear and non-linear), heat transfer and fluid problems, as well as acoustic and

electro-magnetic problems.

In general, a finite element solution may be broken into the following three stages. This is a general guideline that can be used for setting

up any finite element analysis.

1. Preprocessing: defining the problem; the major steps in preprocessing are given below:

m Define keypoints/lines/areas/volumes

m Define element type and material/geometric properties

m Mesh lines/areas/volumes as required

The amount of detail required will depend on the dimensionality of the analysis (i.e. 1D, 2D, axi-symmetric, 3D).

2. Solution: assigning loads, constraints and solving; here we specify the loads (point or pressure), contraints (translational and

rotational) and finally solve the resulting set of equations.

3. Postprocessing: further processing and viewing of the results; in this stage one may wish to see:

m Lists of nodal displacements

m Element forces and moments

m Deflection plots

m Stress contour diagrams

Starting up ANSYS

Large File Sizes

ANSYS can create rather large files when running and saving; be sure that your local drive has space for it.

Getting the Program Started

In the Mec E 3-3 lab, there are two ways that you can start up ANSYS:

1. Windows NT application

2. Unix X-Windows application

Windows NT Start Up

Starting up ANSYS in Windows NT is simple:

l Start Menu

l Programs

l ANSYS 5.7

l Run Interactive Now

Unix X-Windows Start Up

Starting the Unix version of ANSYS involves a few more steps:

l in the task bar at the bottom of the screen, you should see something labeled ...

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