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Apply Mesh Control (VB.NET)

This example shows how to get and set beams and joints, create a mesh, and apply a mesh control.

' Preconditions:
' 1. Add the SolidWorks Simulation as an add-in
'    (in SolidWorks, click Tools > Add-ins > SolidWorks Simulation).
' 2. Add a reference to the SolidWorks Simulation primary interop assembly
'    (in the IDE, right-click the name of the project, select
'    Add Reference, click the Browse tab, navigate to
'    <SolidWorks_install_dir>\api\redist\CLR2 and select
'    SolidWorks.Interop.cosworks.dll).
' 3. Modify the path to the part document and solidworks materials.sldmat
'    as needed.
' 4. Open the Immediate window.
' Postconditions:
' 1. A static study, frame, is created.
' 2. Beam information is shown in the Immediate window.
' 3. Plain Carbon Steel material is applied to all beams.
' 4. Joints are calculated for all beams, and
'    a neutral axis is shown for each beam. The pinball tolerance
'    value and unit are shown in the Immediate window.
' 5. A mixed mesh is created, and its type and state are shown
'    in the Immediate window.
'    NOTE: Step 5 can take several minutes to complete.
' 6. A mesh control is applied, and its various values are shown
'    in the Immediate window.
' *  Beam elements are created by default for parts with
'    structural members.
' *  Because the part document is used elsewhere,
'    do not save any changes when closing it.
Imports SolidWorks.Interop.sldworks
Imports SolidWorks.Interop.swconst
Imports SolidWorks.Interop.cosworks
Imports System
Imports System.Diagnostics

Partial Class SolidWorksMacro

Public Sub main()
Dim swModel As ModelDoc2
Dim swModelDocExt As ModelDocExtension
Dim swSelMgr As SelectionMgr
Dim COSMOSWORKS As CosmosWorks
Dim COSMOSObject As CwAddincallback
Dim ActDoc As CWModelDoc
Dim StudyMngr As CWStudyManager
Dim Study As CWStudy
Dim BeamMgr As CWBeamManager
Dim BeamBody As CWBeamBody
Dim Joints As CWJoints
Dim Mesh As CWMesh
Dim MeshControl As CWMeshControl
Dim nbrBeamBodies As Integer
        Dim beamBodyType As Integer
        Dim ElementSize As Double
        Dim Tolerance As Double
        Dim errors As Integer
        Dim warnings As Integer
        Dim errCode As Integer
        Dim j As Integer
        Dim bApp As Boolean
        Dim keepJointUpdates As Boolean
        Dim status As Boolean
        Dim selEntity1 As Object
        Dim selEntity2 As Object
        Dim selEntity3 As Object
        Dim selEntity4 As Object
        Dim selEntity5 As Object
        Dim selEntity6 As Object
        Dim selEntity7 As Object
        Dim selEntity8 As Object
        Dim selEntity9 As Object

        ' Get the SolidWorks Simulation object
        COSMOSObject = swApp.GetAddInObject("SldWorks.Simulation")
If COSMOSObject Is Nothing Then ErrorMsg(swApp, "COSMOSObject object not found.", True)
        COSMOSWORKS = COSMOSObject.CosmosWorks
If COSMOSWORKS Is Nothing Then ErrorMsg(swApp, "COSMOSWORKS object not found.", True)

'Open and get the active document
        swModel = swApp.OpenDoc6("c:\Program Files\SolidWorks Corp\SolidWorks\samples\tutorial\weldments\weldment_box2.sldprt", swDocumentTypes_e.swDocPART, swOpenDocOptions_e.swOpenDocOptions_Silent, "", errors, warnings)
        swModelDocExt = swModel.Extension
        swSelMgr = swModel.SelectionManager
        ActDoc = COSMOSWORKS.ActiveDoc
If ActDoc Is Nothing Then ErrorMsg(swApp, "No active document.", True)

'Create new static study named frame
        StudyMngr = ActDoc.StudyManager()
If StudyMngr Is Nothing Then ErrorMsg(swApp, "StudyMngr object not there.", True)
        Study = StudyMngr.CreateNewStudy(
"frame", swsAnalysisStudyType_e.swsAnalysisStudyTypeStatic, swsMeshType_e.swsMeshTypeMixed, errCode)
If Study Is Nothing Then ErrorMsg(swApp, "Study not created.", True)

' Get and set beam info
        BeamMgr = Study.BeamManager
        nbrBeamBodies = BeamMgr.BeamCount
"  Number of beams: " & nbrBeamBodies)
        BeamBody =
        For j = 0 To (nbrBeamBodies - 1)
            BeamBody = BeamMgr.GetBeamBodyAt(j, errCode)
If errCode <> 0 Then ErrorMsg(swApp, "No beam body.", True)
"    Name of beam body: " & BeamBody.BeamBodyName)
            beamBodyType = BeamBody.BeamType
If beamBodyType = 0 Then
                Debug.Print("      Type of beam body: beam")
                Debug.Print("      Type of beam body: truss")
End If
            bApp = BeamBody.SetLibraryMaterial("C:\Program Files\SolidWorks Corp\SolidWorks\lang\english\sldmaterials\solidworks materials.sldmat", "Plain Carbon Steel")
If bApp = False Then ErrorMsg(swApp, "No material applied.", True)
            BeamBody =
        Next j

' Calculate joints
        Joints = BeamMgr.GetJointGroup(errCode)
" ")
If errCode <> 0 Then ErrorMsg(swApp, "No joint group.", True)
        Joints.IncludeAllSelectedBeam =
        Joints.IncludeDisplayNeutralAxis = True
        keepJointUpdates = Joints.IncludeKeepModifiedJointOnUpdate
If (keepJointUpdates = True) Then
            Debug.Print("  Keep joint updates: yes")
            Debug.Print("  Keep joint updates: no")
End If
        Debug.Print("  Overwrite pinball value: " & Joints.IncludeTreatAsJointForClearanceLessThan)
"  Pinball radius: " & Joints.PinBallRadius * 0.001)
Select Case Joints.PinBallRadiusUnit
Case 0
"  Pinball radius unit: mm")
Case 1
"  Pinball radius unit: cm")
Case 2
"  Pinball radius unit: m")
Case 3
"  Pinball radius unit: in")
Case 4
"  Pinball radius unit: ft")
Case 5
"  Pinball radius unit: ft-in")
Case 6
"  Pinball radius unit: am")
Case 7
"  Pinball radius unit: nm")
Case 8
"  Pinball radius unit: micron")
Case 9
"  Pinball radius unit: mil")
Case 10
"  Pinball radius unit: microin")
End Select

        ' Mesh the part
        Debug.Print(" ")
"*** Creating a mesh next, which can take several minutes. Please wait. ***")

        Mesh = Study.Mesh
If Mesh Is Nothing Then ErrorMsg(swApp, "No mesh object.", False)
        Mesh.Quality = swsMeshQuality_e.swsMeshQualityHigh
        Mesh.GetDefaultElementSizeAndTolerance(swsLinearUnit_e.swsLinearUnitMillimeters, ElementSize, Tolerance)
        errCode = Study.CreateMesh(swsLinearUnit_e.swsLinearUnitMillimeters, ElementSize, Tolerance)
If errCode <> 0 Then ErrorMsg(swApp, "Mesh failed.", True)
" ")
"  Time to create mesh (hh:mm:ss): " & Mesh.TimeToCompleteMesh)
Select Case Mesh.MeshType
Case 0
"  Mesh type: solid")
Case 1
"  Mesh type: midsurface")
Case 2
"  Mesh type: surface")
Case 3
"  Mesh type: mixed")
Case 4
"  Mesh type: beam")
End Select
        Debug.Print("  Number of mesh controls: " & Mesh.MeshControlCount)
Select Case Mesh.MeshState
Case 0
"  Mesh state: no mesh")
Case 1
"  Mesh state: exists and is current")
Case 2
"  Mesh state: exists and is not current")
Case 3
"  Mesh state: failed")
Case 4
"  Mesh state: interrupted")
End Select

        ' Select structural members for mesh control
"Mesh control...")

        status = swModelDocExt.SelectByID2(
"Structural Member1[4]", "SOLIDBODY", 0, 0, 0, False, 0, Nothing, 0)
        selEntity1 = swSelMgr.GetSelectedObject6(2, -1)

        status = swModelDocExt.SelectByID2(
"Structural Member3[2]", "SOLIDBODY", 0, 0, 0, False, 0, Nothing, 0)
        selEntity2 = swSelMgr.GetSelectedObject6(3, -1)

        status = swModelDocExt.SelectByID2(
"Structural Member3[3]", "SOLIDBODY", 0, 0, 0, False, 0, Nothing, 0)
        selEntity3 = swSelMgr.GetSelectedObject6(4, -1)

        status = swModelDocExt.SelectByID2(
"Structural Member3[4]", "SOLIDBODY", 0, 0, 0, False, 0, Nothing, 0)
        selEntity4 = swSelMgr.GetSelectedObject6(6, -1)

        status = swModelDocExt.SelectByID2(
"Structural Member3[1]", "SOLIDBODY", 0, 0, 0, False, 0, Nothing, 0)
        selEntity5 = swSelMgr.GetSelectedObject6(8, -1)

        status = swModelDocExt.SelectByID2(
"Structural Member1[1]", "SOLIDBODY", 0, 0, 0, False, 0, Nothing, 0)
        selEntity6 = swSelMgr.GetSelectedObject6(12, -1)

        status = swModelDocExt.SelectByID2(
"Structural Member5[1]", "SOLIDBODY", 0, 0, 0, False, 0, Nothing, 0)
        selEntity7 = swSelMgr.GetSelectedObject6(14, -1)

        status = swModelDocExt.SelectByID2(
"Structural Member5[2]", "SOLIDBODY", 0, 0, 0, False, 0, Nothing, 0)
        selEntity8 = swSelMgr.GetSelectedObject6(15, -1)

        status = swModelDocExt.SelectByID2(
"Structural Member1[3]", "SOLIDBODY", 0, 0, 0, False, 0, Nothing, 0)
        selEntity9 = swSelMgr.GetSelectedObject6(16, -1)

Dim selEntities As Object() = {selEntity1, selEntity2, selEntity3, selEntity4, selEntity5, selEntity6, selEntity7, selEntity8, selEntity9}

        MeshControl = Mesh.ApplyMeshControl(selEntities, errCode)
"  Name of mesh control: " & MeshControl.Name)
"  Element size for mesh control: " & MeshControl.ElementSize)
"  Number of entities in mesh control: " & MeshControl.EntityCount)
"  Number of elements on a beam: " & MeshControl.NumofElementsforBeams)
"  State of mesh control (0 = suppressed; 1 = not suppressed): " & MeshControl.State)

End Sub

    'Error routine
    Private Sub ErrorMsg(ByVal SwApp As Object, ByVal Message As String, ByVal EndTest As Boolean)
        swApp.SendMsgToUser2(Message, 0, 0)
"'*** WARNING - General")
"'*** " & Message)
If EndTest Then
        End If
    End Sub

    ''' <summary>
    ''' The SldWorks swApp variable is pre-assigned for you.
    ''' </summary>
    Public swApp As SldWorks

End Class



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