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Get and Override Mass Properties Example (VB.NET)

This example shows how to get and override some mass properties of a part.

'-----------------------------------------------------------------------

' Preconditions:

' 1. Ensure the specified document exists.

' 2. Open the Immediate window.

'

' Postconditions: Inspect the Immediate window.

'----------------------------------------------------------------------

Imports SolidWorks.Interop.sldworks

Imports SolidWorks.Interop.swconst

Imports System.Runtime.InteropServices

Imports System

 

Partial Class SolidWorksMacro

 

 

    Dim Extn As ModelDocExtension

    Dim MyMassProp As MassProperty2

    Dim OvProp As MassPropertyOverrideOptions

    Dim swModelDoc As ModelDoc2

    Dim pmoi As Object

    Dim vValue As Object

    Dim value(2) As Double

    Dim errors As Integer

    Dim warnings As Integer

    Dim val As Double

 

    Sub main()

 

        swModelDoc = swApp.OpenDoc6("C:\Users\Public\Documents\SOLIDWORKS\SOLIDWORKS 2019\samples\tutorial\advdrawings\98food processor.sldasm", swDocumentTypes_e.swDocASSEMBLY, swOpenDocOptions_e.swOpenDocOptions_Silent, "", errors, warnings)

        Extn = swModelDoc.Extension

 

        ' Create mass properties and override options

        MyMassProp = Extn.CreateMassProperty2

        OvProp = MyMassProp.GetOverrideOptions

        OvProp.OverrideMass = True

        OvProp.SetOverrideMassValue(100)

        Dim comArr(8) As Double

        comArr(0) = 0.1677

        comArr(1) = 0

        comArr(2) = 0

        comArr(3) = 0

        comArr(4) = 0.21358

        comArr(5) = 0

        comArr(6) = 0

        comArr(7) = 0

        comArr(8) = 0.34772

        OvProp.OverrideMomentsOfInertia = True

        OvProp.SetOverrideMomentsOfInertiaValue(0, comArr, "")

 

        ' Use document property units (MKS)

        MyMassProp.UseSystemUnits = False

 

        Debug.Print("Mass properties before override")

        Debug.Print("")

 

        val = MyMassProp.Mass

        Debug.Print("Mass: " & val)

        val = MyMassProp.Volume

        Debug.Print("Volume: " & val)

        val = MyMassProp.Density

        Debug.Print("Density: " & val)

        val = MyMassProp.SurfaceArea

        Debug.Print("Surface area: " & val)

        pmoi = MyMassProp.PrincipalMomentsOfInertia

        Debug.Print("Principal moments of inertia: Px: " & pmoi(0) & ", Py: " & pmoi(1) & ", and Pz: " & pmoi(2))

        vValue = MyMassProp.GetMomentOfInertia(0)

        Debug.Print("Moments of inertia: Lxx: " & vValue(0) & ", Lxy: " & vValue(1) & ", Lxz: " & vValue(2) & ", Lyx: " & vValue(3) & ", Lyy: " & vValue(4) & ", Lyz: " & vValue(5) & ", Lzx: " & vValue(6) & ", Lzy: " & vValue(7) & ", Lzz: " & vValue(8))

 

        MyMassProp.SetOverrideOptions(OvProp, swInConfigurationOpts_e.swThisConfiguration, Nothing)

        MyMassProp.Recalculate

 

        Debug.Print("")

        Debug.Print("Mass properties after override")

        Debug.Print("")

 

        val = MyMassProp.Mass

        Debug.Print("Mass: " & val)

        val = MyMassProp.Volume

        Debug.Print("Volume: " & val)

        val = MyMassProp.Density

        Debug.Print("Density: " & val)

        val = MyMassProp.SurfaceArea

        Debug.Print("Surface area: " & val)

        pmoi = MyMassProp.PrincipalMomentsOfInertia

        Debug.Print("Principal moments of inertia: Px: " & pmoi(0) & ", Py: " & pmoi(1) & ", and Pz: " & pmoi(2))

        vValue = MyMassProp.GetMomentOfInertia(0)

        Debug.Print("Moments of inertia: Lxx: " & vValue(0) & ", Lxy: " & vValue(1) & ", Lxz: " & vValue(2) & ", Lyx: " & vValue(3) & ", Lyy: " & vValue(4) & ", Lyz: " & vValue(5) & ", Lzx: " & vValue(6) & ", Lzy: " & vValue(7) & ", Lzz: " & vValue(8))

 

    End Sub

    ''' <summary>

    ''' The SldWorks swApp variable is pre-assigned for you.

    ''' </summary>

    Public swApp As SldWorks

End Class



 

 

 



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