This use case shows how to create nodes to nodes connection mesh parts. This scenario requires "FEM Surface (FMS)" product.
This macro opens an Analysis document and creates a nodes to nodes connection mesh part is created. This mesh part requires a point to point analysis connection as support. This connection can be created only if Generative Structural Analysis Product (GSA) is installed. The support already exist in the document and is assigned to the mesh part. Update is called on the mesh part to generate mesh.
CAAAniMeshNodesToNodesConnection is launched in CATIA [1]. No open document is needed.
CAAAniMeshNodesToNodesConnection.catvbs is located in the CAAScdAniUseCases module. Execute macro (Windows only).
CAAAniMeshNodesToNodesConnection 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\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 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
'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)
'Create reference from the surface analysis connection
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 the Reference interface. This is equivalent to the selection of a B-Rep elements inside the interactive application.
Creating the Mesh Part and Assigning Values to its Attributes.
...
'Add new nodes to nodes connection mesh part to the list of mesh parts
Set nodeMesh = oAnalysisMeshParts.Add ("MSHPartConnPointPoint")
'Assign previously created reference as support
nodeMesh.AddSupportFromReference NOTHING, reference1
'Assign values to its global specifications
nodeMesh.SetGlobalSpecification "Tolerance", 10.
nodeMesh.SetGlobalSpecification "StopUpdateOnError", 2
nodeMesh.SetGlobalSpecification "MiddleCombination", 12
'Update the mesh part
nodeMesh.Update
... |
Epilog
... End Sub ... |
To run the macro interactively CATDocView environment variable must be defined.
