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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