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Get and Override Mass Properties Example (VBA)

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.

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

Dim swApp As SldWorks.SldWorks

Dim Extn As SldWorks.ModelDocExtension

Dim MyMassProp As SldWorks.MassProperty2

Dim OvProp As SldWorks.MassPropertyOverrideOptions

Dim swModelDoc As SldWorks.ModelDoc2

Dim pmoi As Variant

Dim vValue As Variant

Dim value(2) As Double

Dim errors As Long

Dim warnings As Long

Dim val As Double

Dim params As Variant

 

Option Explicit

Sub main()

 

    Set swApp = Application.SldWorks

    Set swModelDoc = swApp.OpenDoc6("C:\Users\Public\Documents\SOLIDWORKS\SOLIDWORKS 2020\samples\tutorial\advdrawings\98food processor.sldasm", swDocASSEMBLY, swOpenDocOptions_Silent, "", errors, warnings)

    Set Extn = swModelDoc.Extension

   

    ' Create mass properties and override options

    Set MyMassProp = Extn.CreateMassProperty2

    Set 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, swThisConfiguration, Empty

    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



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