1、COPYRIGHT DASSAULT SYSTEMES 2002,1,Generative Part Structural Analysis,CATIA Training Foils,Version 5 Release 9 June 2002 EDU-CAT-E-GPS-FF-V5R9,COPYRIGHT DASSAULT SYSTEMES 2002,2,Objectives of the course In this course you will learn how to perform Static and Modal Analyses (create analysis document
2、s, compute and visualize) on a single Part.Targeted audience CATIA V5 UsersPrerequisitesMechanical DesignFundamentals in CATIAV5,Generative Part Structural Analysis,1.5 days,COPYRIGHT DASSAULT SYSTEMES 2002,3,Table of Contents (1/2),Introduction to GPS Analysis p.51.1. Accessing the Workbench p.61.2
3、. User Interface p.71.3. User Settings p.10 Static Analysis Pre-Processing p.142.1. Creating a new Analysis Document p.162.2. Saving Analysis Documents p.192.3. Mesh-parts management p.222.4. Define Restraints p.262.5. Define Loads p.302.6. Advanced Pre-Processing Tools p.362.7. Beam elements p.40 R
4、esults Computation of a Static Analysis p.433.1. Specifying External Storage p.443.2. Computing p.49 Static Results Visualization and Refinement p.534.1. Image Creation p.544.2. Images Layout p.60 4.3. Results Management p.614.4. Other Capabilities p.674.5. Historic of Computation p.694.6. Parabolic
5、 Element Type p.704.7. Global and Local Mesh Refinement p.714.8. Mesh Adaptativity p.734.9. Knowledgeware for Analysis p.77,COPYRIGHT DASSAULT SYSTEMES 2002,4,Table of Contents (2/2),Virtual Part p.835.1. The Various Transmission Types List p.845.2. Examples Showing Various Transmission Types p.855.
6、3. Example of Rigid Spring Virtual parts use p.865.4. Applying Actions to Virtual Parts p.875.5. Virtual Parts sharing a single handler point p.89 Dynamic Pre-Processing and Computation p.906.1. Creating Additional Mass Equipment p.926.2. Unrestrained or Restrained Part p.946.3. Computing the Analys
7、is p.96 Dynamics Results Visualization p.987.1. Image Creation p.997.2. Results Management p.102 Elements tests with ELFINI solver p.1048.1. TE4 and TE10 comparison p.1058.2. Static Analysis p.1068.2. Frequency Analysis p.1078.3. Buckling Analysis p.108Frequently Asked Questions p.109,COPYRIGHT DASS
8、AULT SYSTEMES 2002,5,In this lesson, you will learn about the Generative Part Structural Analysis Workbench by :Accessing The WorkbenchUser InterfaceUser Settings,1. Introduction to GPS Analysis,COPYRIGHT DASSAULT SYSTEMES 2002,6,1.1. Accessing the Workbench,In this lesson, you will learn about the
9、Generative Part Structural Analysis Workbench.,Be sure that the Part being studied has a material applied. This action can only be performed in the Part Design Workbench,3- Modal or Static Analysis. A new CATAnalysis document is created.,2- Analysis & Simulation,1- Start,COPYRIGHT DASSAULT SYSTEMES
10、2002,7,1.2. User Interface - Toolbars,Restraints,External Storage Management,Analysis reporting,Loads,Model Manager,Compute,Images,Virtual parts Manager and mass,COPYRIGHT DASSAULT SYSTEMES 2002,8,User Interface - Icons,Mass Equipment Mass,Analysis Results Basic Analysis Report Historic Of Computati
11、ons Listing,Solver Tools Storage Location Clear Storage Temporary Data Directory,Model manager Tetrahedron, Octree and Beam meshing Element type and local mesh Solid property Shell property Beam property Model Check,Virtual parts manager Virtual parts Periodicity conditions,New !,New !,New !,COPYRIG
12、HT DASSAULT SYSTEMES 2002,9,Analysis Tree,Associated Generative Part,Pre-Processing Input,Images of Results,User Interface - Specification Tree,Mesh parts Properties,External Storage,Mesh parts Specifications,COPYRIGHT DASSAULT SYSTEMES 2002,10,This enables you to faster access the analysis workbenc
13、h.,1.3. User Settings - Shortcut Of Analysis Icon,2- Transfer “Generative Structural Analysis” from Available to Favorites,1- Select “Customize” from Tools menu,3- Access Analysis Workbench through this icon,COPYRIGHT DASSAULT SYSTEMES 2002,11,In Part Design Workbench, customize Render Style by addi
14、ng material visualization. This will also enable you to view analysis images in average-iso visualization mode. We will activate Materials so that material render styles are displayed,User Settings - Customizing View Modes,2- Click on “Apply Customized View”,3- Activate “Materials” and click OK.,1-
15、Select Render Style from the View menu,COPYRIGHT DASSAULT SYSTEMES 2002,12,This enhances the visualization of selected faces.,User Settings - Highlighting Faces and Edges,1- Select “Options” from the Tools menu,2- Click “Display”,3- Click “Navigation”,4- Activate “Highlight faces and edges”,COPYRIGH
16、T DASSAULT SYSTEMES 2002,13,User Settings - Show / No Show Visualization,1- Select “Options” from the “Tools” menu,3- Click “Tree”,2- Click “Display”,4- Activate Visualization of Show / NoShow,COPYRIGHT DASSAULT SYSTEMES 2002,14,In this lesson, you will learn how to create a new Analysis Document, h
17、ow to save it and how to define Restraints and Loads on a Part. Create a New Analysis Document Save Analysis Documents Define Restraints Define Loads Advanced Pre-Processing Tools,2. Static Analysis Pre-Processing,COPYRIGHT DASSAULT SYSTEMES 2002,15,General Process for a Static Analysis,Ensure that
18、part has material defined then Open Static Analysis Workbench,Apply Restraints to the model,Apply Loads to the model,Analyze the Results,Refine the Analysis,Perform Computation,Create Images,COPYRIGHT DASSAULT SYSTEMES 2002,16,A Material must be applied to the studied Part. This can only be peformed
19、 in the Part Design Workbench.,1- Click on the Material icon,2- Select a Material,4- Apply,2.1. Document Creation - Assigning Materials,5- Check,3- Select a Part (on the geometry or in the tree),COPYRIGHT DASSAULT SYSTEMES 2002,17,New Analysis Documents, entitled CATAnalysis files, can be created in
20、 various ways.,There are 3 ways to create a new Analysis Document :,Document Creation -Three Ways,Workbench Icon,File menu,Start menu,COPYRIGHT DASSAULT SYSTEMES 2002,18,Here is how to create a new Analysis Document using the Start menu.,Document Creation - Using Start Menu,1- Click “Start”,2- Click
21、 “Generative Structural Analysis”,3- Select Static or Frequency Analysis,COPYRIGHT DASSAULT SYSTEMES 2002,19,There are various ways to save an Analysis Document and its parent documents. It is important to achieve this correctly with an assembly analysis document, for the assembly has to be properly
22、 linked with all the parts it is made from.Only those documents that have been modified will be saved or proposed for the saving.,2.2. Saving an Analysis Document,Save will save the active Analysis Document Save As. is similar to Save, but it allows you to specify the name and folder for the active
23、Analysis Document Save All will propose saving all open documents and children of these documents,COPYRIGHT DASSAULT SYSTEMES 2002,20,Save Management is an easy way to save all modified documents under user-specified names.,All modified open documents will be proposed for saving, regardless of which
24、 document is active,Document Saving - Under Specified Names,1- Select “Save Management”,2- Specify which documents to be saved,COPYRIGHT DASSAULT SYSTEMES 2002,21,“Send To” is an easy way to save all linked documents in a user specified directory.,Available files,Files that will be saved,Document Sa
25、ving - “Send To” Mechanism,Use this option if you want the directory structure of the selected files list to be duplicated. Else the selected files will be copied directly under the target directory.,1- Select “Send To” & “Directory”,2- Use these arrows to switch selected files between “Can be copie
26、d” and “Will be copied”,4- Select the target directory,3- Click here to modify the selected target name,2- Use theses arrows to switch all the files between “Can be copied” and “Will be copied”,COPYRIGHT DASSAULT SYSTEMES 2002,22,2.3. Mesh-parts management Mesh creation & destruction,New R9,To creat
27、e or modify mesh-parts, click on the appropriate mesh-part toolbar icon,Octree tetrahedron mesh for solid geometry,1. Select the mesh part in the tree. 2. Contextual menu, and Delete.,Octree triangle mesh for surface mesh,Beam meshing for wire-frame geometry,We can also delete a mesh part created fr
28、om an automatic mesher or FMS,1. Select the geometry to mesh. 2. Select the corresponding mesh type. 3. Enter mesh specifications,COPYRIGHT DASSAULT SYSTEMES 2002,23,Mesh-parts management Properties management,New R9,1. Select the appropriate property type. 2. Select the part geometry entity (PartBo
29、dy or OpenBody) in the tree. 3. Enter property specifications as the case may be.,A mesh part must have only one single property.,As for mesh parts, we can also delete properties.,Once the mesh part is created, we have to define its property,COPYRIGHT DASSAULT SYSTEMES 2002,24,Mesh-parts management
30、Model Check command,New R9,The Model Check command can help the user understanding the Design-Analysis links. Thanks to the list of all the mesh parts and properties. Highlights the corresponding features.Just before compute, we can check the consistency of the FEM model : Missing properties. Missin
31、g material. Missing support. Diagnostic problems.,After modifications,COPYRIGHT DASSAULT SYSTEMES 2002,25,Mesh-parts management Analyze of parts made of several bodies,New R9,We can analyze parts which have several GSD bodies Each body has its own material. Several mesh parts will be created (one fo
32、r each body). Then, we can apply different thicknesses for each mesh part.,Several bodies,Several mesh parts,COPYRIGHT DASSAULT SYSTEMES 2002,26,Clamps are restraints applied to surface or curve geometries, on which all nodes are to be blocked in the subsequent analysis.,2.4. Define Restraints - Cla
33、mps,1- Click on the “Clamp” Icon in the “Restrain” Toolbar,2- Select the geometry support(s) (Surfaces or Edges).,3- Click “OK”,Symbols associated to a null translation in all directions of the selected geometry are displayed.,A Clamp object appears in the Specification Tree under the active Restrai
34、nts objects set.,Any selectable geometry is highlighted when you drag the cursor over it.,COPYRIGHT DASSAULT SYSTEMES 2002,27,Surface slider (3Tr. & 1Rot.), Slider (1Tr.), Sliding pivot (1Tr. & 1Rot.), Ball joint (3Rot.) and Pivot (1Rot.). Surface slider can be directly applied on surfaces whereas o
35、ther Restraints must be applied on a virtual part (See 5.4.),1- Click on Surface Slider Icon,Symbols on Geometry,Features Tree,Define Restraints - Mechanical Restraints,2- Select the Geometry Support(s) (Surfaces),3- Click “OK”,COPYRIGHT DASSAULT SYSTEMES 2002,28,Advanced Restraints are generic rest
36、raints allowing you to fix any combination of available nodal degrees of freedom (dof) on arbitrary geometries.,2- Select axis type,Define Restraints - Advanced Restraints,1- Select the support(s) (Surfaces or Edges),3- Activate degrees to be fixed,The rotation degrees are relevant only for structur
37、al element meshes(i.e. shell elements), or Virtual Parts.,COPYRIGHT DASSAULT SYSTEMES 2002,29,Iso-static Restraints are Statically Definite Restraints allowing you to simply support a Body.,Define Restraints - Iso-static Restraints,1- Click on the “iso-static restraints” Icon,2- Select a geometry,3-
38、 Click OK,COPYRIGHT DASSAULT SYSTEMES 2002,30,Pressures are intensive loads representing uniform scalar pressure fields applied to surface geometries, hence the force direction is everywhere normal to the surface.,1- Click on the “Pressure” Icon,Symbols representing the Pressure Loads are displayed.
39、,A Loads object appears in the Features Tree under the active Loads objects set.,2.5. Define Loads - Pressure Loads,2- Select the geometry support(s) (Surfaces). Any selectable geometry is highlighted when you drag the cursor over it.,4- Click “OK”,3- Specify a pressure value or Open a Data File for
40、 mapping,COPYRIGHT DASSAULT SYSTEMES 2002,31,Distributed Forces (Moments) are force systems statically equivalent to a given pure force (couple) resultant at a given point, distributed on a virtual part or on a geometric selection.,Define Loads - Distributed Forces and Moments,1- Select support(s) (
41、Surfaces or Edges),2- Select axis type,3- Specify force,COPYRIGHT DASSAULT SYSTEMES 2002,32,Accelerations are intensive loads representing mass body force (acceleration) fields of uniform magnitude applied to parts.,Define Loads - Acceleration (Gravity Body Forces),1- Select support(s) (Surfaces or
42、Edges),2- Select axis type,3- Specify vector,COPYRIGHT DASSAULT SYSTEMES 2002,33,Rotation Forces are intensive loads representing mass body force (acceleration) fields induced by rotational motion applied to parts.,Define Loads - Rotation Forces,1- Select support(s) (Surfaces or Edges),2- Select axi
43、s,3- Specify angle velocity and acceleration (if necessary),COPYRIGHT DASSAULT SYSTEMES 2002,34,Force Densities are intensive loads representing line (surface) traction fields or volume body force fields, of uniform magnitude, applied to either curve (surface) geometries, or to parts.,Define Loads -
44、 Force Densities,1- Select support(s),2- Select axis type,3- Specify vector Or Open a data file for mapping an external load,COPYRIGHT DASSAULT SYSTEMES 2002,35,Enforced Displacements are equivalent loads applied to support geometries, resulting for the subsequent analysis in assigning non-zero valu
45、es to displacements in previously restrained directions. An Enforced Displacement object is by definition associated to a Restraint object.,Define Loads - Enforced Displacements,1- Select restraint,2- Enter values for each restrained dof,COPYRIGHT DASSAULT SYSTEMES 2002,36,Instead of specifying each
46、 component of the force vector, you can simply define the force direction by using the compass. This will ensure that the force is defined relatively to the part, whatever its positioning.,2.6. Advanced Pre-Processing Tools - Force with Compass,1- Click on the loads icon,2- Select support and specif
47、y force vector norm,3- Drag the compass by handling the red square and drop it on the appropriate surface,4- Use Compass to define vector direction,COPYRIGHT DASSAULT SYSTEMES 2002,37,Instead of using the global axis system, you can use an implicit one if you want your pre-processing to be defined w
48、ith respect to the part. You can also specify a user defined axis system if you have created one in Part Design. In that case, the dof directions of an advanced restraint, or the components of a force, will be processed with respect to the the specified Axis system. Their interpretation will further
49、 depend on your Axis Type choice. The restrain rotations are available only with surfacic geometry.,Advanced Pre-Processing Tools - Axis Systems,1- Select a user defined axis system type,3- Select axis system local orientation,4- Fix dofs (in Advanced Restraint case) NB: Rotations are available with shells, but not with solids.,2- Select an existing axis system in the features tree,
