Create Buckling Study Example (VB.NET)

This example shows how to create and analyze a buckling study.

NOTE: To get persistent reference identifiers (PIDs) for model selections, you can use pidcollector.exe or IModelDocExtension::GetPersistReference3.

'----------------------------------------------------------------------------
' Preconditions:
' 1. Add the SOLIDWORKS Simulation as an add-in (in SOLIDWORKS, click 
'    Tools > Add-ins > SOLIDWORKS Simulation > OK).
' 2. Add the SOLIDWORKS Simulation primary interop assembly as a reference
'    (in the IDE, click Project > Add Reference > .NET > 
'    SolidWorks.Interop.cosworks > OK).
' 3. Ensure that the specified model document exists.
' 4. Ensure that the specified materials library exists.
' 5. Open an Immediate window.
'
' Postconditions:
' 1. Opens the specified model document.
' 2. Creates new study, Buckling1.
' 3. Prints the study options of Buckling1 to the Immediate window.
' 4. Adds AISI 1020 steel to the solid bodies in the model.
' 5. Adds Fixed-1 restraint to Buckling1.
' 6. Adds Pressure-1 load to Buckling1.
' 7. Meshes the bodies in the model.
' 8. Analyzes Buckling1.
' 9. Inspect the Immediate window, the Simulation study tree, and the
'    graphics area.
'
' NOTE: Because the model is used elsewhere, do not save changes.
' ---------------------------------------------------------------------------
Imports SolidWorks.Interop.sldworks
Imports SolidWorks.Interop.swconst
Imports SolidWorks.Interop.cosworks
Imports System.Runtime.InteropServices
Imports System
Imports System.Diagnostics
 
Partial Class SolidWorksMacro
 
    Dim Part As ModelDoc2
    Dim COSMOSWORKS As CosmosWorks
    Dim CWAddinCallBack As CwAddincallback
    Dim ActDoc As CWModelDoc
    Dim StudyMngr As CWStudyManager
    Dim Study As CWStudy
    Dim SolidMgr As CWSolidManager
    Dim SolidComp As CWSolidComponent
    Dim SolidBody As CWSolidBody
    Dim LBCMgr As CWLoadsAndRestraintsManager
    Dim CWPressureLoad As CWPressure
    Dim errCode As Integer
    Dim boolstatus As Boolean
    Dim longstatus As Integer, longwarnings As Integer
    Dim StaticOptions As CWStaticStudyOptions
    Dim DispArray2(0) As Object
    Dim DispArray3(0) As Object
    Const MeshEleSize As Double = 4.48279654351123
    Const MeshTol As Double = 0.224139827175561
    Const Tol1 As Double = 0.05
 
    Sub main()
 
        Part = SwApp.OpenDoc6("C:\Users\Public\Documents\SOLIDWORKS\SOLIDWORKS 2017\Simulation Examples\Educational Examples\spider.sldasm", 2, 0, "", longstatus, longwarnings)
        Part = SwApp.ActiveDoc
 
        Dim PIDCollection As New Collection
        PIDCollection = PIDInitializer()
 
        Dim strMaterialLib As String
        strMaterialLib = SwApp.GetExecutablePath & "\lang\english\sldmaterials\solidworks materials.sldmat"
 
        DispArray2(0) = New DispatchWrapper(SelectByPID(Part, "selection2", PIDCollection)) ' cylindrical face
        DispArray3(0) = New DispatchWrapper(SelectByPID(Part, "selection3", PIDCollection)) ' arm
 
        CWAddinCallBack = SwApp.GetAddInObject("SldWorks.Simulation")
        If CWAddinCallBack Is Nothing Then ErrorMsg(SwApp, "Failed to get Simulation add-in")
        COSMOSWORKS = CWAddinCallBack.COSMOSWORKS
        If COSMOSWORKS Is Nothing Then ErrorMsg(SwApp, "Failed to get COSMOSWORKS")
 
        ActDoc = COSMOSWORKS.ActiveDoc()
        If ActDoc Is Nothing Then ErrorMsg(SwApp, "Failed to get active document")
 
        'Create new buckling study
        StudyMngr = ActDoc.StudyManager()
        If StudyMngr Is Nothing Then ErrorMsg(SwApp, "Failed to get the study manager")
        Study = StudyMngr.CreateNewStudy3("Buckling1", swsAnalysisStudyType_e.swsAnalysisStudyTypeBuckling, 0, errCode)
        If Study Is Nothing Then ErrorMsg(SwApp, "Failed to create new study")
 

        'Buckling study options
        Dim bsOptions As CWBucklingStudyOptions
        bsOptions = Study.BucklingStudyOptions
        Debug.Print("")
        Debug.Print("Buckling study options")
        Debug.Print("  Number of buckling modes: " & bsOptions.BucklingModes)
        Dim zeroStrainTemp As Double
        Dim tempUnit As Integer
        bsOptions.GetZeroStrainTemperature(zeroStrainTemp, tempUnit)
        Debug.Print("  Flow/Thermal Effects:")
        Debug.Print("    Temperature source as defined in swsThermalOption_e: " & bsOptions.ThermalResults)
        Debug.Print("    Temperature source:")
        If bsOptions.ThermalResults = 1 Then
            Debug.Print("        Thermal study: " & bsOptions.ThermalStudyName)
            Debug.Print("        Time step of transient thermal study: " & bsOptions.TimeStep)
        ElseIf bsOptions.ThermalResults = 2 Then
            Debug.Print("        SOLIDWORKS Flow Simulation results file: " & bsOptions.FlowTemperatureFile)
        Else
            Debug.Print("        Model")
        End If
        Debug.Print("    Reference temperature at zero strain: " & zeroStrainTemp)
 
        Debug.Print("    Import fluid pressure loads from SOLIDWORKS Flow Simulation? (1=yes, 0=no): " & bsOptions.CheckFlowPressure)
        If bsOptions.CheckFlowPressure Then
            Debug.Print("        SOLIDWORKS Flow Simulation results file: " & bsOptions.FlowPressureFile)
            Debug.Print("        Use reference pressure offset from Flow Simulation? (1=yes, 0=no): " & bsOptions.ReferencePressureOption)
            If Not bsOptions.ReferencePressureOption Then
                Debug.Print("          Reference pressure offset: " & bsOptions.DefinedReferencePressure)
            End If
            Debug.Print("        Run as legacy study and import only the normal component of the pressure load? (1=yes, 0=no): " & bsOptions.CheckRunAsLegacy)
        End If
        Debug.Print("  Result folder: " & bsOptions.ResultFolder)
        Debug.Print("  Solver type as defined in swsSolverType_e: " & bsOptions.SolverType)
        Debug.Print("  Use soft spring to stabilize the model? (1=yes, 0=no): " & bsOptions.UseSoftSpring)
 
        'Add materials
        SolidMgr = Study.SolidManager
        If SolidMgr Is Nothing Then ErrorMsg(SwApp, "Failed to get solid manager")
        SolidComp = SolidMgr.GetComponentAt(0, errCode)
        If errCode <> 0 Then ErrorMsg(SwApp, "Failed to get component")
        SolidBody = SolidComp.GetSolidBodyAt(0, errCode)
        If errCode <> 0 Then ErrorMsg(SwApp, "Failed to get solid body")
        boolstatus = SolidBody.SetLibraryMaterial(strMaterialLib, "AISI 1020")
        If boolstatus = False Then ErrorMsg(SwApp, "Failed to apply material")
 
        SolidComp = SolidMgr.GetComponentAt(1, errCode)
        If errCode <> 0 Then ErrorMsg(SwApp, "Failed to get component")
        SolidBody = SolidComp.GetSolidBodyAt(0, errCode)
        If errCode <> 0 Then ErrorMsg(SwApp, "Failed to get solid body")
        boolstatus = SolidBody.SetLibraryMaterial(strMaterialLib, "AISI 1020")
        If boolstatus = False Then ErrorMsg(SwApp, "Failed to apply material")
 
        SolidComp = SolidMgr.GetComponentAt(2, errCode)
        If errCode <> 0 Then ErrorMsg(SwApp, "Failed to get component")
        SolidBody = SolidComp.GetSolidBodyAt(0, errCode)
        If errCode <> 0 Then ErrorMsg(SwApp, "Failed to get solid body")
        boolstatus = SolidBody.SetLibraryMaterial(strMaterialLib, "AISI 1020")
        If boolstatus = False Then ErrorMsg(SwApp, "Failed to apply material")
 
        LBCMgr = Study.LoadsAndRestraintsManager
        If LBCMgr Is Nothing Then ErrorMsg(SwApp, "Failed to get the loads and restraints manager")
 
        'Add a restraint
        Dim restraint As CWRestraint
        restraint = LBCMgr.AddRestraint(swsRestraintType_e.swsRestraintTypeFixed, (DispArray2), Nothing, errCode)
        If errCode <> 0 Then ErrorMsg(SwApp, "Failed to add a restraint")
 
        'Add a pressure load
        CWPressureLoad = LBCMgr.AddPressure(swsPressureType_e.swsPressureTypeNormal, (DispArray3), Nothing, errCode)
        If errCode <> 0 Then ErrorMsg(SwApp, "Failed to create a pressure load")
 
        'Create mesh
        Dim CWMeshObj As CWMesh
        CWMeshObj = Study.Mesh
        If CWMeshObj Is Nothing Then ErrorMsg(SwApp, "Failed to get the mesh object")
        CWMeshObj.MesherType = 0
        CWMeshObj.Quality = 0
        errCode = Study.CreateMesh(0, MeshEleSize, MeshTol)
        If errCode <> 0 Then ErrorMsg(SwApp, "Failed to create the mesh")
        CWMeshObj = Nothing
 
        'Run analysis
        errCode = Study.RunAnalysis
        If errCode <> 0 Then ErrorMsg(SwApp, "Analysis failed with error as defined in swsRunAnalysisError_e: " & errCode)
 
    End Sub
 
    Sub ErrorMsg(ByVal SwApp As SldWorks, ByVal Message As String)
        SwApp.SendMsgToUser2(Message, 0, 0)
        SwApp.RecordLine("'*** WARNING - General")
        SwApp.RecordLine("'*** " & Message)
        SwApp.RecordLine("")
    End Sub
 
    Function SelectByPID(ByVal Part As ModelDoc2, ByVal PIDName As String, ByVal PIDCollection As Collection) As Object
        Dim PID() As Byte
        Dim PIDVariant As Object
        Dim PIDString As String
        Dim i As Integer
        Dim SelObj As Object
 
        'Get the string from the collection
        PIDString = ""
        PIDString = PIDCollection.Item(PIDName)
 
        'Parse the string into an array
        PIDVariant = Split(PIDString, ",")
        ReDim PID(UBound(PIDVariant))
 
        'Change to a byte array
        For i = 0 To (UBound(PIDVariant) - 1)
            PID(i) = PIDVariant(i)
        Next i
 
        'Select the entity
        SelObj = Part.Extension.GetObjectByPersistReference3((PID), errCode)
        SelectByPID = SelObj
        SelObj = Nothing

    End Function
 
    Function PIDInitializer() As Collection
 
        Dim PIDCollection As New Collection
        Dim selection2 As String
        Dim selection3 As String
 
        'Cylindrical face
        selection2 = "64,31,0,0,3,0,0,0,255,254,255,14,115,0,104,0,97,0,102,0,116,0,45,0,49,0,64,0,115,0,112,0,105,0,100,0,101,0,114,0,4,0,0,0,16,0,0,0,1,0,0,0,1,0,0,0,10,0,0,0,255,255,1,0,11,0,109,111,70,97,99,101,82,101,102,95,99,1,0,0,0,0,0,0,0,5,0,0,0,0,3,0,0,0,0,0,0,125,195,148,37,173,73,178,84,125,195,148,37,173,73,178,84,0,0,255,255,1,0,23,0,109,111,70,114,111,109,83,107,116,69,110,116,83,117,114,102,73,100,82,101,112,95,99,0,0,255,255,1,0,6,0,109,111,70,82,95,99,255,255,1,0,13,0,109,111,69,120,116,79,98,106,101,99,116,95,99,255,255,1,0,17,0,109,111,67,83,116,114,105,110,103,72,97,110,100,108,101,95,99,255,254,255,97,67,0,58,0,92,0,80,0,114,0,111,0,103,0,114,0,97,0,109,0,32,0,70,0,105,0,108,0,101,0,115,0,92,0,83,0,79,0,76,0,73,0,68,0,87,0,79,0,82,0,75,0,83,0,32,0,67,0,111,0,114,0,112,0,92,0,83,0,79,0,76,0,73,0,68,0,87,0,79,0,82,0,75,0,83,0,92,0,83,0,105,0,109,0,117,0,108,0,97,0,116,0,105,0,111,0,110,0,92,0,69,0,120,0,97,0,109,0,112,0,108,0,101,0,115,0,92,0,69,0,100,0,117,0,99,0,97,0,11"
        selection2 = selection2 & "6,0,105,0,111,0,110,0,97,0,108,0,32,0,69,0,120,0,97,0,109,0,112,0,108,0,101,0,115,0,92,0,115,0,104,0,97,0,102,0,116,0,46,0,115,0,108,0,100,0,112,0,114,0,116,0,9,128,255,254,255,5,115,0,104,0,97,0,102,0,116,0,2,0,0,155,126,163,53,0,165,25,208,59,1,0,0,0,0,0,0,0,5,0,0,0,255,254,255,7,68,0,101,0,102,0,97,0,117,0,108,0,116,0,63,0,0,0,0,0,0,0,7,50,149,70,12,0,0,0,171,126,163,53,1,0,0,0,255,255,1,0,20,0,109,111,69,110,100,70,97,99,101,83,117,114,102,73,100,82,101,112,95,99,0,0,5,128,8,0,12,0,0,0,171,126,163,53,1,0,0,0,255,255,255,255,0,0,12,128,0,0,5,128,8,0,12,0,0,0,171,126,163,53,0,0,0,0,255,255,255,255,0,0,0,0,0,0,0,0,0,0"
        selection2 = selection2 & ",Type=1"
 
        'Arm
        selection3 = "64,31,0,0,3,0,0,0,255,254,255,15,115,0,112,0,105,0,100,0,101,0,114,0,45,0,49,0,64,0,115,0,112,0,105,0,100,0,101,0,114,0,4,0,0,0,16,0,0,0,1,0,0,0,1,0,0,0,9,0,0,0,255,255,1,0,11,0,109,111,70,97,99,101,82,101,102,95,99,1,0,0,0,0,0,0,0,8,0,0,0,0,3,0,0,0,0,0,0,125,195,148,37,173,73,178,84,125,195,148,37,173,73,178,84,0,0,255,255,1,0,23,0,109,111,70,114,111,109,83,107,116,69,110,116,83,117,114,102,73,100,82,101,112,95,99,0,0,255,255,1,0,6,0,109,111,70,82,95,99,255,255,1,0,13,0,109,111,69,120,116,79,98,106,101,99,116,95,99,255,255,1,0,17,0,109,111,67,83,116,114,105,110,103,72,97,110,100,108,101,95,99,255,254,255,98,67,0,58,0,92,0,80,0,114,0,111,0,103,0,114,0,97,0,109,0,32,0,70,0,105,0,108,0,101,0,115,0,92,0,83,0,79,0,76,0,73,0,68,0,87,0,79,0,82,0,75,0,83,0,32,0,67,0,111,0,114,0,112,0,92,0,83,0,79,0,76,0,73,0,68,0,87,0,79,0,82,0,75,0,83,0,92,0,83,0,105,0,109,0,117,0,108,0,97,0,116,0,105,0,111,0,110,0,92,0,69,0,120,0,97,0,109,0,112,0,108,0,101,0,115,0,92,0,69,0,100,0,117,0,99,0,9"
        selection3 = selection3 & "7,0,116,0,105,0,111,0,110,0,97,0,108,0,32,0,69,0,120,0,97,0,109,0,112,0,108,0,101,0,115,0,92,0,115,0,112,0,105,0,100,0,101,0,114,0,46,0,115,0,108,0,100,0,112,0,114,0,116,0,9,128,255,254,255,6,115,0,112,0,105,0,100,0,101,0,114,0,2,0,0,149,119,163,53,0,73,0,71,0,1,0,0,0,0,0,0,0,3,0,0,0,255,254,255,7,68,0,101,0,102,0,97,0,117,0,108,0,116,0,142,0,0,0,0,0,0,0,13,50,149,70,28,0,0,0,119,124,163,53,10,0,0,0,255,255,1,0,20,0,109,111,69,110,100,70,97,99,101,83,117,114,102,73,100,82,101,112,95,99,0,0,5,128,8,0,107,0,0,0,227,104,166,53,1,0,0,0,255,255,255,255,255,255,1,0,19,0,109,111,70,105,108,108,101,116,83,117,114,102,73,100,82,101,112,95,99,0,0,5,128,8,0,139,0,0,0,68,107,166,53,4,0,0,0,15,128,0,0,5,128,8,0,141,0,0,0,83,107,166,53,4,0,0,0,15,128,0,0,5,128,8,0,139,0,0,0,68,107,166,53,3,0,0,0,0,0,12,128,0,0,5,128,8,0,48,0,0,0,82,125,163,53,1,0,0,0,255,255,255,255,0,0,0,0,0,0,0,0,0,0"
        selection3 = selection3 & ",Type=1"
 
        'Store constants in a collection
        PIDCollection.Add(selection2, "selection2")
        PIDCollection.Add(selection3, "selection3")
 
        PIDInitializer = PIDCollection

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