This use case shows how to create a symmetry mesh part. Symmetry transformation can be applied to a 1D, 2D and 3D mesh. This scenario requires "FEM Surface (FMS)" product to create 1D or 2D transformed mesh part and FEM Solid (FMD) product to create 3D transformed mesh part.
This macro opens an Analysis document. A symmetry mesh part is created on a Surface mesh part. The surface mesh part already exists in the document.
CAAAniMeshSymmetry is launched in CATIA [1]. No open document is needed.
CAAAniMeshSymmetry.catvbs is located in the CAAScdAniUseCases module. Execute macro (Windows only).
CAAAniMeshSymmetry includes the following steps:
- Prolog
- Extracting the List of Mesh Parts and Publications
- Creating Mesh part and Assigning Values to its Attributes
- Epilog
Prolog
... ' -----------------------------------------------------------
' Optional: allows to find the sample wherever it's installed
sDocPath=CATIA.SystemService.Environ("CATDocView")
If (Not CATIA.FileSystem.FolderExists(sDocPath)) Then
Err.Raise 9999,,"No Doc Path Defined"
End If
' -----------------------------------------------------------
' Open the Analysis document
sFilePath = CATIA.FileSystem.ConcatenatePaths(sDocPath, "online\CAAScdAniUseCases\samples\Surface.CATAnalysis")
Set oAnalysisDocument = CATIA.Documents.Open(sFilePath)
... |
Open the Analysis document. The Analysis document is retrieved in the
documentation installation path, this path has already been stored in the
sDocPath variable. In the collection of documents, two documents
can be retrieved; the Analysis document and the Part document.
Extracting the List of Mesh Parts and Publications
...
' Retrieve the analysis Manager
Set oAnalysisManagar = oAnalysisDocument.Analysis
Set oAnalysisSet = oAnalysisManagar.AnalysisSets
' Retrieve the part document and product
Set oAnalysisLinkedDocuments = oAnalysisManagar.LinkedDocuments
Set partDocument = oAnalysisLinkedDocuments.Item(1)
Set product = partDocument.Product
' Retrieve the analysis model
Set oAnalysisModels = oAnalysisManagar.AnalysisModels
Set oAnalysisModel = oAnalysisModels.Item(1)
'Retrieve the mesh manager and list of mesh parts
Set oAnalysisMeshManager = oAnalysisModel.MeshManager
Set oAnalysisMeshParts = oAnalysisMeshManager.AnalysisMeshParts
Set surfMesh = oAnalysisMeshParts.Item("Surface Mesh.1")
'Create the reference of the surface mesh
Set reference = oAnalysisManagar.CreateReferenceFromObject(surfMesh)
...
|
According to the general Analysis Document structure, this macro uses some standard procedures to navigate or retrieve the required objects. First, from the Document, we find the Analysis Manager Object, the Analysis Models and the Mesh Manager Objects. The extraction of pre-defined geometric elements is done by using the Reference interface. This is equivalent to the selection of B-Rep elements inside the interactive application. In this macro the reference is created from the surface mesh part.
Creating the Mesh Part and Assigning Values to its Attributes.
...
'Add the mesh part to list of mesh parts
Set meshTrans = oAnalysisMeshParts.Add("MSHPartSymmetry")
'Assign the reference to the mesh part
meshTrans.AddSupportFromReference NOTHING, reference
meshTrans.SetGlobalSpecification "Condensation", 0
meshTrans.SetGlobalSpecification "Tolerance", "1.0 mm"
meshTrans.SetGlobalSpecification "NbCopies", 2
'Set the specification; the plane of symmetry
meshTrans.SetSpecificationFromPublication "Direction", product, pubPlane, 0
'Update the mesh part
meshTrans.Update
...
|
Epilog
... End Sub ... |
To run the macro interactively CATDocView and ADL_ODT_SLASH environment variables must be defined.
