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Create Fatigue Study for Dynamic Harmonic Study Example (VB.NET)

This example shows how to create a fatigue study for a linear dynamic harmonic 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. Open public_documents\Simulation Examples\Dynamics\ac_unit.sldasm.
' 4. Activate Sample_Harmonic.
' 5. Expand Parts in the Simulation design tree and apply Ductile Iron (SN)
'    to all parts (right-click a part, click Apply/Edit Material,
'    select SOLIDWORKS Materials > Iron > Ductile Iron (SN), and click Apply).
' 6. Open an Immediate window.
'
' Postconditions:
' 1. Creates study, HarmonicFatigue.
' 2. Adds a fatigue event for step 15 of Sample_Harmonic.
' 3. Analyzes HarmonicFatigue.
' 4. Displays a message box with the damage percent error.
' 5. Click OK in the message box.
' 6. Prints the minimum and maximum fatigue values to the Immediate window.
'
' NOTE: Because the model is used elsewhere, do not save any 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
 
    Sub main()
 
        Dim COSMOSWORKS As CosmosWorks
        Dim CWAddinCallBack As CwAddincallback
        Dim ActDoc As CWModelDoc
        Dim StudyMngr As CWStudyManager
        Dim Study As CWStudy
        Dim CWFeatObj As CWResults
        Dim FatigueOptions As CWFatigueStudyOptions
        Dim FatigueEvent As CWFatigueEvent
        Dim errCode As Integer
        Dim Damage As Object
 
        Const Tol As Double = 0.05   '5% damage tolerance
        Const DamageMax As Double = 63.68  '63.68% maximum damage
 
 
        CWAddinCallBack = SwApp.GetAddInObject("SldWorks.Simulation")
        If CWAddinCallBack Is Nothing Then ErrorMsg(SwApp, "CWAddinCallBack object not found")
        COSMOSWORKS = CWAddinCallBack.COSMOSWORKS
        If COSMOSWORKS Is Nothing Then ErrorMsg(SwApp, "COSMOSWORKS object not found")
 
        ActDoc = COSMOSWORKS.ActiveDoc()
        If ActDoc Is Nothing Then ErrorMsg(SwApp, "Failed to get active document")
 
        ' Add default fatigue study results plot
        errCode = ActDoc.AddDefaultFatigueStudyPlot(swsFatigueStudyResultType_e.swsFatigueStudy_DamagePlot)
 
        StudyMngr = ActDoc.StudyManager()
        If StudyMngr Is Nothing Then ErrorMsg(SwApp, "Failed to get CWStudyManager object")
 
        ' Create harmonic fatigue study
        Debug.Print("Creating HarmonicFatigue study...")
 
        Study = StudyMngr.CreateNewStudy3("HarmonicFatigue", swsAnalysisStudyType_e.swsAnalysisStudyTypeFatigue, 2, errCode)
        If Study Is Nothing Then ErrorMsg(SwApp, "Failed to create new study")
 
        errCode = Study.SetFatigueResultOptions(1, Nothing)
 
        FatigueOptions = Study.FatigueStudyOptions
        If FatigueOptions Is Nothing Then ErrorMsg(SwApp, "Failed to get CWFatigueStudyOptions object")
 
        FatigueEvent = FatigueOptions.AddFatigueEventForHarmonic("Sample_Harmonic", 0, 15, 100000, 150000, errCode)
        FatigueEvent.SuppressUnSuppress() 'suppress event
        FatigueEvent.SuppressUnSuppress() 'unsuppress event
 
        errCode = Study.RunAnalysis
        If errCode <> 0 Then ErrorMsg(SwApp, "Analysis failed with error code as defined in swsRunAnalysisError_e: " & errCode)
 
        CWFeatObj = Study.Results
        If CWFeatObj Is Nothing Then ErrorMsg(SwApp, "Failed to get CWResults object")
 
        ' Get minimum and maximum fatigue values
        Damage = CWFeatObj.GetMinMaxFatigue(1, errCode)
        If errCode <> 0 Then ErrorMsg(SwApp, "Failed to get minimum and maximum fatigue. Error code as defined in swsResultsError_e: " & errCode)
 
        ' Report damage percent error if result maximum fatigue value is not within tolerance
        If (Damage(3) < (1 - Tol) * DamageMax) Or (Damage(3) > (1 + Tol) * DamageMax) Then
            ErrorMsg(SwApp, "Damage % error = " & (((Damage(3) - DamageMax) / DamageMax) * 100))
        End If
 
        Debug.Print("  Minimum fatigue is " & Damage(1) & " at node " & Damage(0) & ".")
        Debug.Print("  Maximum fatigue is " & Damage(3) & " at node " & Damage(2) & ".")
 
    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
 
    
    ''' <summary>
    ''' The SldWorks swApp variable is pre-assigned for you.
    ''' </summary>
    Public swApp As SldWorks
 
 
End Class
 



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