Mô tả:
ELFINI Structural Analysis
CATIA V5 Training
Foils
Copyright DASSAULT SYSTEMES
ELFINI Structural
Analysis
Version 5 Release 19
January 2009
EDU_CAT_EN_EST_FI_V5R19
Instructor Notes:
Copyright DASSAULT SYSTEMES
1
ELFINI Structural Analysis
About this course
Objectives of the course
Upon completion of this course you will be able to:
- Use the advanced pre-processing capabilities (such as loads and
boundary conditions) to create more realistic FE models.
- Visualize the images of objects used for pre-processing (which is not
possible in GPS).
- Use advanced case features (such as Buckling, MultiLoads, Envelope) in
addition to the standard Static and Frequency cases
- Create your own result image templates, customize the post-processing
result images, group selective entities in the result images, and create
advanced reports
Targeted audience
Copyright DASSAULT SYSTEMES
Mechanical Designers
Prerequisites
8 Hours
Generative Part Structural Analysis Fundamentals, Generative Assembly
Structural Analysis, FEM Surface Meshing
Instructor Notes:
Copyright DASSAULT SYSTEMES
2
ELFINI Structural Analysis
Table of Contents (1/3)
Introduction to EST Analysis
ELFINI Structural Analysis
How to Use EST in FEA Process
Advanced Pre-Processing
Advanced 1D Properties
Advanced 2D Properties
Advanced Loads and Boundary Conditions
What is Data Mapping
What is Visualization Transferred onto Mesh
Visualizing Pre-processing Entities Transferred on Mesh
How to Customize Visualization Transferred on Mesh
What is FE Groups by Neighborhood
How to Create Groups for Pre-processing
What is Import V4
How to Import V4 Model
Copyright DASSAULT SYSTEMES
Advanced Analysis Case Management
Combined Case
Static Constrained Modes Case
6
7
9
10
11
16
30
44
45
47
48
49
50
51
52
53
54
57
Instructor Notes:
Copyright DASSAULT SYSTEMES
3
ELFINI Structural Analysis
Table of Contents (2/3)
Envelop Case
Pre-processing Case
Multi Loads Case
Transfer of Computed Loads/Displacements
Assembled Solution
Local Adaptivity Specifications
Multi Analysis Case
How to Use Frequency Shifting
Buckling Case
Copyright DASSAULT SYSTEMES
Advanced Post-Processing
How to Customize Image
How to Create Advanced Report
Accessing Advanced Post-processing Images
Contact Pressure
How to Export Nodal Values
How to Generate Images for Groups
How to Create an Image Template
How to Create Nodes and Elements Images
60
65
68
76
90
93
98
101
102
107
108
113
118
119
123
124
125
126
Instructor Notes:
Copyright DASSAULT SYSTEMES
4
ELFINI Structural Analysis
Table of Contents (3/3)
Local Sensors
EST Functionalities
Frequently Asked Questions
To Sum Up
Master Exercises
Master Exercise:Advanced Analysis of Landing Gear Assembly
Master Exercise: Blade Analysis
Added Exercises
136
137
145
154
155
162
164
Copyright DASSAULT SYSTEMES
Added Exercise: Truss analysis
Added Exercise: Analysis using Combined Case
Added Exercise: Automation (VB / Journaling)
127
131
134
135
Instructor Notes:
Copyright DASSAULT SYSTEMES
5
ELFINI Structural Analysis
Introduction to EST Analysis
Copyright DASSAULT SYSTEMES
In this lesson, you will learn about the ELFINI Structural Analysis Workbench. The
ELFINI Structural Analysis Workbench is entirely integrated both in GPS and GAS
Workbenches.
Instructor Notes:
Copyright DASSAULT SYSTEMES
6
ELFINI Structural Analysis
ELFINI Structural Analysis (1/2)
ELFINI Structural Analysis(EST) is an extension of GPS workbench and offers
advanced functionalities for each step in Finite Element Analysis process.
Pre-processing
(FE Modeling)
Advanced
pre-processing
Computation
(Solving FE Model)
Post-processing
(View Results)
Copyright DASSAULT SYSTEMES
Advanced
Post-processing
Advanced Analysis
Case Management
Mesh Refinement
Iterations
Create
Reports
Instructor Notes:
Copyright DASSAULT SYSTEMES
7
ELFINI Structural Analysis
ELFINI Structural Analysis (2/2)
In this course you will see some of the functionalities offered by EST.
Advanced Pre-processing offers more functionalities for
pre-processing elements such as:
Advanced Loads Ex. Bearing Loads, Thermal loads
Advanced features in 1D, 2D Properties
Importing Data for Pre-processing features
Advanced Analysis Case Management In Addition to Static
and Frequency Computation this offers:
Buckling Analysis,
Multiple Analysis,
Multi-loads Analysis,
Combined Case Computation
Frequency Shifting
Computation with Adaptivity
Copyright DASSAULT SYSTEMES
Advanced Post-processing This offers more features for creating
post-processing Images such as:
Image Customization
Image Template
Exporting Nodal values
Advanced Reports
Instructor Notes:
Copyright DASSAULT SYSTEMES
8
ELFINI Structural Analysis
How to Use EST in FEA Process
You will see the general process flow in which different EST functionalities
are required while performing FE Analysis.
1
Starting from a Part or an Assembly, open
Generative Structural Analysis Workbench
Copyright DASSAULT SYSTEMES
2
Advanced Pre-Processing
Visualize Pre-Processing
specifications directly on Mesh
Advanced Computing Perform
Computation with Multi Analysis
Cases, including Buckling
3
Advanced Post-Processing
Customize image appearance
Generate Advanced Reports
Instructor Notes:
Copyright DASSAULT SYSTEMES
9
ELFINI Structural Analysis
Advanced Pre-Processing
In this lesson, you will learn how Pre-Processing Elements are transferred onto the
Mesh. Moreover, you will see different types of loads and pre-processing features only
available in EST.
Copyright DASSAULT SYSTEMES
Advanced 1D Properties
Advanced 2D Properties
Advanced Loads and Boundary Conditions
What is Data Mapping
What is Visualization Transferred onto Mesh
Visualizing Pre-processing Entities Transferred on Mesh
How to Customize Visualization Transferred on Mesh
What is FE Groups by Neighborhood
How to Create Groups for Pre-processing
What is Import V4
How to Import V4 Model
Instructor Notes:
Copyright DASSAULT SYSTEMES
10
ELFINI Structural Analysis
Advanced 1D Property
Copyright DASSAULT SYSTEMES
You will see the functionalities related to 1D property.
Instructor Notes:
Copyright DASSAULT SYSTEMES
11
ELFINI Structural Analysis
What is Variable Cross-Section Beams
Copyright DASSAULT SYSTEMES
Variable beam factors lets you create a linear approximation of variable cross section
beams.
Activate ‘variable beam factors’ option. Two fields appear in the Beam Property dialog
box. The Multiplication Factors on extremities frame will let you give a scaling factor on
each side of the section. The beam will then be modeled as a sequence of constant
section beams with linearly decreasing dimensions.
Instructor Notes:
Copyright DASSAULT SYSTEMES
12
ELFINI Structural Analysis
Assigning Arbitrary Cross-section Using 1D Property
You can assign an arbitrary cross-section in addition to standard cross-sections
available using “Beam From Surface” option.
Section properties for selected section is automatically computed. Parameters Extend the
beam property definition to any profile.
New “Computed
From Surface” item
2
Select the section of
the beam
3
Characteristics of
the beam
Copyright DASSAULT SYSTEMES
1
Instructor Notes:
Copyright DASSAULT SYSTEMES
13
ELFINI Structural Analysis
How to Create Local 1D Property
You can overload global 1D properties on local geometry. You can have
multiple properties management in one single part. This is required for a
beam having variable cross-section and material properties.
1
Select a support (line, curve). Choose
a section and an orientation point
Beam Modeling Methodology
1.
Create wire-frame geometry. Use
Join command to create a single
wire-frame feature.
2.
Create a beam mesh-part and assign
Global 1D property.
3.
Overload this default Global property
on local lines or curves.
Copyright DASSAULT SYSTEMES
2
Right-click on the 1D Property node
in tree and select Local 1D Property
Instructor Notes:
Copyright DASSAULT SYSTEMES
14
ELFINI Structural Analysis
What is 1D Property for Vehicle Conceptual Model
A new type of 1D elements: BAR. Bar elements only have stiffness along their
axis. They have three translation degrees of freedom per node. You can change
the Physical Property type of 1D mesh as Bar or Beam.
Copyright DASSAULT SYSTEMES
On the 1D property
On the 1D mesh part
Bar Elements
surrounding membrane
or shear panel element
Membrane
or shear
panel
Membrane or shear
panel element
In aeronautics, bar elements are usually
used in combination with membrane or shear
panel elements.
Instructor Notes:
Copyright DASSAULT SYSTEMES
15
ELFINI Structural Analysis
Advanced Pre-Processing
Copyright DASSAULT SYSTEMES
You will see the advanced features for 2D Property.
Instructor Notes:
Copyright DASSAULT SYSTEMES
16
ELFINI Structural Analysis
How to Create Local 2D Property
You can edit the 2D property icon and create several Local 2D properties associated
to local geometry. This is available through contextual menu on the 2D Property in
specification tree. This is required to model parts having variable thickness and
material properties.
Copyright DASSAULT SYSTEMES
1
Right-click on the 2D property in specification
tree. Select local 2D Property
2
Select a face. Enter a new thickness value
You need to create a Local 2D Property for
every area that has a thickness value other than
the global thickness defined by the 2D Property.
You can Select Data
mapping and choose a
txt or xls input file.
Instructor Notes:
Copyright DASSAULT SYSTEMES
17
ELFINI Structural Analysis
Importing 2D Properties from External File
Copyright DASSAULT SYSTEMES
You can import 2D properties from an external file (.xls or .txt), and apply them locally
or globally. There is no need for compatible grid and node identification.
1
Contextual menu on the
2D property icon. Select
Create local 2D Property.
2
Select a face.
3
Choose Data Mapping,
and Browse a xls file.
4
Compute Mesh Only.
5
Contextual menu on
Properties, and
Generate Image.
6
Choose Thickness
fringe.
At the point
(-2,14,-7),
there is a
thickness
value of
2*1mm
Instructor Notes:
Copyright DASSAULT SYSTEMES
18
ELFINI Structural Analysis
What is Changing Physical Type for 2D Property
You can change the 2D property type using ‘Change Type’ Mesh
Specification contextual menu.
On the 2D mesh part
Membrane and Shear panel are 2D
elements with no transversal stiffness
Copyright DASSAULT SYSTEMES
On the 2D property
2D Property will support membrane
and shear panel elements in addition
to shell elements
Instructor Notes:
Copyright DASSAULT SYSTEMES
19
ELFINI Structural Analysis
What is Imported Composite Property
You can generate Composite FE model from the design by Plies/Zones.
There are two types of composites analysis :
By zone for preliminary design
By ply for detailed analysis
The orthotropic material is now
available on 2D geometries
Applied on 2D geometry
Type of analysis chosen
( by zone or by ply)
Copyright DASSAULT SYSTEMES
Optional tolerance for
core sampling depth
FE Composite properties are automatically generated
from Design definition.
Full Support of FE simulation on composite models
(pre-processing, solving, post-processing)
Instructor Notes:
Copyright DASSAULT SYSTEMES
20
- Xem thêm -