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Mat16-Pearl
16-Pearl
December 16, 2015
Solved

Unit issue: assigning material

  • December 16, 2015
  • 1 reply
  • 1341 views

Hi there,

when I try to assign a material to a part using a *.mtl - file, the units in the mtl-file are ignored.

For instance

Young Modul:

"2300 MPa" becomes "2300 lbm/(in sec^2)" when I assign it via script (CurModel.CurrentMaterial = CurModel.RetrieveMaterial(material_name);)

"2300 MPa" becomes "41.0733 kPa " when I assign it via User Dialogue

I am using Creo 3.0 M050.


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Best answer by Mat

I found a work around.

I change units after retrieving the material. 

CurModel.CurrentMaterial = CurModel.RetrieveMaterial(material_name);


CurModel.CurrentMaterial.SetPropertyUnits(pfcCreate("pfcMaterialPropertyType").MTL_PROP_MASS_DENSITY, "kg/mm^3", false); 


CurModel.CurrentMaterial.SetPropertyUnits(pfcCreate("pfcMaterialPropertyType").MTL_PROP_YOUNG_MODULUS, "MPa", false);


CurModel.CurrentMaterial.SetPropertyUnits(pfcCreate("pfcMaterialPropertyType").MTL_PROP_THERMAL_EXPANSION_COEFFICIENT, "/ K", false);


CurModel.CurrentMaterial.SetPropertyUnits(pfcCreate("pfcMaterialPropertyType").MTL_PROP_SPECIFIC_HEAT, "joule / (kg K)", false);


CurModel.CurrentMaterial.SetPropertyUnits(pfcCreate("pfcMaterialPropertyType").MTL_PROP_THERMAL_CONDUCTIVITY , "W/(m K)", false);

The downside is, that all mtl-files have to be converted to those units.

1 reply

Mat16-PearlAuthorAnswer
16-Pearl
December 16, 2015

I found a work around.

I change units after retrieving the material. 

CurModel.CurrentMaterial = CurModel.RetrieveMaterial(material_name);


CurModel.CurrentMaterial.SetPropertyUnits(pfcCreate("pfcMaterialPropertyType").MTL_PROP_MASS_DENSITY, "kg/mm^3", false); 


CurModel.CurrentMaterial.SetPropertyUnits(pfcCreate("pfcMaterialPropertyType").MTL_PROP_YOUNG_MODULUS, "MPa", false);


CurModel.CurrentMaterial.SetPropertyUnits(pfcCreate("pfcMaterialPropertyType").MTL_PROP_THERMAL_EXPANSION_COEFFICIENT, "/ K", false);


CurModel.CurrentMaterial.SetPropertyUnits(pfcCreate("pfcMaterialPropertyType").MTL_PROP_SPECIFIC_HEAT, "joule / (kg K)", false);


CurModel.CurrentMaterial.SetPropertyUnits(pfcCreate("pfcMaterialPropertyType").MTL_PROP_THERMAL_CONDUCTIVITY , "W/(m K)", false);

The downside is, that all mtl-files have to be converted to those units.

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