This use case shows you how to create seam welding connection mesh part. Seam weld can be defined as wire frame or 1D feature. This scenario requires "FEM Surface (FMS)".
The macro opens an analysis document. Seam welding connection mesh can be created on line analysis connection and line analysis connection within one part. In this macro the mesh is created on line Analysis Connection which already exists in the document. The connection is assigned as support to the mesh part and it is updated to generate mesh.
CAAAniMeshSeamWelding is launched in CATIA [1]. No open document is needed.
CAAAniMeshSeamWelding.catvbs is located in the CAAScdAniUseCases module. Execute macro (Windows only).
CAAAniMeshSeamWelding 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 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 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 Seam welding connection mesh part to the list of mesh parts
Set seamWeld = oAnalysisMeshParts.Add ("MSHPartConnWeldSeam")
'Add previously created reference line analysis connection as support
seamWeld.AddSupportFromReference NOTHING, reference1
'Assign values to global specifications
seamWeld.SetGlobalSpecification "MaximalGap", "10.0 mm"
seamWeld.SetGlobalSpecification "MeshStep", "10.0 mm"
seamWeld.SetGlobalSpecification "StopUpdateOnError", 1
seamWeld.SetGlobalSpecification "MiddleCombination", 2
seamWeld.SetGlobalSpecification "Width", "4.0 mm"
'Update the mesh
seamWeld.Update
...
|
Epilog
...End Sub ... |
To run the macro interactively CATDocView environment variable must be defined.
