This use case shows you how to create surface welding connection mesh part. This scenario requires "FEM Surface (FMS)".
The macro opens an analysis document. Spot welding connection mesh can be created on point analysis connection and point analysis connection within one part. In this macro the mesh is created on point analysis connection which already exists in the document. The point analysis connection is applied as support to the mesh part and it is updated to generate mesh.
CAAAniMeshSpotWelding is launched in CATIA [1]. No open document is needed.
CAAAniMeshSpotWelding.catvbs is located in the CAAScdAniUseCases module. Execute macro (Windows only).
CAAAniMeshSpotWelding includes the following steps:
- Prolog
- Extracting from the Part Document the Reference Object for Meshing
- 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\WeldConnections.CATAnalysis")
Set oAnalysisDocument = CATIA.Documents.Open(sFilePath)
... |
Open the Analysis document. The Analysis document is retrieve 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 Reference Object from the Part Document for Meshing
...
'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
'Retrieve the connection design manager and connection
Set connection = oAnalysisSet.ItemByType("ConnectionDesignManager")
Set connSet = connection.AnalysisSets
Set conn = connSet.ItemByType("ConnectionDesignSet")
Set entity = conn.AnalysisEntities
Set surfConn = entity.Item(1)
Set reference1 = oAnalysisManagar.CreateReferenceFromObject(surfConn)
...
|
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 with the help of Reference interface. This is equivalent to the selection of a B-Rep elements inside the interactive application.
Creating Mesh Part and Assigning Values to its Attributes
... 'Add new surface analysis connection mesh to the list of mesh parts
Set surfWeld = oAnalysisMeshParts.Add ("MSHPartConnWeldSurf")
'Assign previously created reference as support
surfWeld.AddSupportFromReference NOTHING, reference1
'Assign values to its global specifications
spotWeldMesh.SetGlobalSpecification "MaximalGap", "10.0 mm"
spotWeldMesh.SetGlobalSpecification "MeshStep", "10.0 mm"
spotWeldMesh.SetGlobalSpecification "StopUpdateOnError", 1
spotWeldMesh.SetGlobalSpecification "SpotDiameter", "2.0 mm"
spotWeldMesh.SetGlobalSpecification "MiddleCombination", 3
'Update Mesh
spotWeldMesh.Update
...
|
Epilog
...End Sub ... |
To run the macro interactively CATDocView environment variable must be defined.
