CATIA V5 Analysis - Free

172 Pages·2009·4.75 MB·English

CATIA V5 Analysis

CATIA V5 Analysis
STUDENT GUIDE
CATIA V5 Analysis
Student Handbook
Version 5 Release 19
16 Hours
Copyright DASSAULT SYSTEMES 3
CATIA V5 Analysis
STUDENT GUIDE
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CATIA V5 Analysis
STUDENT GUIDE
Table of Contents
Introduction to Finite Element Analysis 7
Pre-processing 37
Computation 63
Post-processing 81
Mesh Refinement 113
Assembly Structural Analysis 125
Master Project 138
Shortcuts 164
Glossary 165
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CATIA V5 Analysis
STUDENT GUIDE
Introduction to Finite Element Analysis 1
Learning Objectives:
Upon completion of this lesson you will be able to:
(cid:57) Understand the general steps to be followed to
perform Finite Element Analysis for structures.
(cid:57) Understand the general FEA process in GPS
workbench.
(cid:57) Understand the preparation of part and surface
models for analysis.
2 hours
Copyright DASSAULT SYSTEMES Introduction to Finite Element Analysis 7
CATIA V5 Analysis
STUDENT GUIDE
Case Study
Introduction to FEA
Each lesson in this course will contain a case study,
which will help to explain the skills and concepts
Exercises
covered in the lesson. Models used for case study
come from the drill press assembly, which is also your
master project. GPS Pre-processing
Design Intent (C
Exercises a
s
e
S
Each case study contains a set of model requirements, tu
d
known as the design intent. The first case study does GPS Computation y
)
not contain a design intent because you are not going to
Exercises
design anything. However, by the end of this lesson you
should be able to:
(cid:57) Understand FEA process GPS Post- M
a
(cid:57) Open GPS workbench processing s
te
(cid:57) Changing default units r P
Exercises r
(cid:57) Choosing Local co-ordinate system o
je
c
(cid:57) Applying Constraints on Part of Face t
(cid:57) Prepare surfaces for GPS Analysis Mesh Refinement
Stages in the Process
Exercises
Each lesson consists of steps. For lesson 1, you will go
through the following steps to start with FEA in Generative Assembly Structural
Analysis
Structural Analysis Workbench:
1. What is Finite Element Analysis Process.
Exercises
2. Introduction to Generative Structural Analysis
(GPS) Workbench.
3. Preparing Parts and Surfaces for Analysis.
Copyright DASSAULT SYSTEMES Introduction to Finite Element Analysis 8
CATIA V5 Analysis
STUDENT GUIDE
Finite Element Analysis Process
Finite Element analysis (FEA) is a numerical tool
used to simulate the physical system. In this Pre-processing
(FE Modeling)
method the modeled system is broken into smaller
geometric shapes, called finite elements, whose Computation
behavior can be described mathematically. The (Solving FE Model) Finite Element
Analysis Process
elements and their interrelationships are converted
Post-processing
into a system of equations which are solved (View Results)
numerically. The overall process is divided into
Mesh Refinement
smaller steps as follow
Iterations
1. Pre-processing: Conversion of actual problem
Create
into Finite element problem Reports
Pre-processing
2. Computation: Solution of the of the FE
problem provided by pre-processing to find
out unknown displacement values
3. Post-processing: Calculation of strains and
stresses using displacement values. Study of
displacements strains and stresses
4. Mesh Refinement: Refinement of the mesh
Report Generation Computation
and computation to achieve the required level
of accuracy
5. Report Generation: Generation of various
plots such as displacements, strains and
stresses once the required level of accuracy
Post-processing
is generated Mesh-Refinement
Copyright DASSAULT SYSTEMES Introduction to Finite Element Analysis 9
CATIA V5 Analysis
STUDENT GUIDE
Introduction to GPS workbench
The GPS workbench provides tools and
functionalities to perform FEA in CATIA. Following
are the FEA process steps that can be performed
using GPS workbench.
1. Open the Generative Structural Analysis
workbench. Apply material, mesh the part,
apply the restraints and loads
2. Compute the Analysis
3. Visualize the results
4. Interpret the results and Mesh Refinement
5. Manage the results
According to variation in load with respect to time,
the FEA for structures can be classified as:
(cid:131) Static Analysis
(cid:131) Transient Analysis
(cid:131) Harmonic Analysis
According to the way the structure reacts to the
load, the FEA for structures can be classified as:
(cid:131) Linear analysis
(cid:131) Non-linear Analysis
Entities created during process of GPS Static
Analysis gets mapped in the tree-structure as GPS Static Analysis Tree Structure
shown.
Copyright DASSAULT SYSTEMES Introduction to Finite Element Analysis 10