How can I get material properties with PyMechanical?

With PyMechanical embedded I open a mechanical model and want to access the material properties from the materials of the project tree (e.g. Young's Modulus).

I tried to reach it via ExtAPI.DataModel.Project.Model.Materials, but couldn't find the correct properties.

Is there another method to get the values?

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Accepted answers

Abel Ramos

Hi, a couple of links that may be of help:

https://discuss.ansys.com/discussion/comment/653#Comment_653?utm_source=community-search&utm_medium=organic-search&utm_term=get+material+properties+from+the+tree

https://discuss.ansys.com/discussion/comment/5418#Comment_5418?utm_source=community-search&utm_medium=organic-search&utm_term=get+material+properties+from+the+tree

All comments

James Derrick

Hi @Daniel169 Could you provide the code you've already tried? Otherwise the @Structures-Scripting-Team might be able to help

Abel Ramos

Hi, a couple of links that may be of help:

https://discuss.ansys.com/discussion/comment/653#Comment_653?utm_source=community-search&utm_medium=organic-search&utm_term=get+material+properties+from+the+tree

https://discuss.ansys.com/discussion/comment/5418#Comment_5418?utm_source=community-search&utm_medium=organic-search&utm_term=get+material+properties+from+the+tree

Daniel169

Hi,
thank you @Abel Ramos for the links.
I have now managed to get the values that I need by going through each material model of the materials, for example:

from System import DBNull
materials = ExtAPI.DataModel.Project.Model.Materials.Children
for mat in materials:
    if not hasattr(mat, "ChildrenInGroup"):
        for model in mat.MaterialModels:
            mpd = model.MaterialPropertyData
            if model.Name == "Density":
                for var in mpd.Variables:
                    if hasattr(var, "DatumColl"):
                        dcol = var.DatumColl
                        if var.Name == "Density":
                            density_value = dcol[0].Value if dcol else DBNull.Value
                            density_unit = dcol[0].Unit if dcol else DBNull.Value
            if model.Name == "Isotropic Elasticity":
                for var in mpd.Variables:
                    if hasattr(var, "DatumColl"):
                        dcol = var.DatumColl
                        if var.Name == "Young's Modulus":
                            elasticity_youngs_modulus_value = dcol[0].Value if dcol else DBNull.Value
                            elasticity_youngs_modulus_unit = dcol[0].Unit if dcol else DBNull.Value
                        elif var.Name == "Poisson's Ratio":
                            elasticity_poissons_ratio_value = dcol[0].Value if dcol else DBNull.Value
                        elif var.Name == "Bulk Modulus":
                            elasticity_bulk_modulus_value = dcol[0].Value if dcol else DBNull.Value
                            elasticity_bulk_modulus_unit = dcol[0].Unit if dcol else DBNull.Value
                        elif var.Name == "Shear Modulus":
                            elasticity_shear_modulus_value = dcol[0].Value if dcol else DBNull.Value
                            elasticity_shear_modulus_unit = dcol[0].Unit if dcol else DBNull.Value
                        elif var.Name == "Temperature":
                            elasticity_temperature_value = dcol[0].Value if dcol else DBNull.Value
                            elasticity_temperature_unit = dcol[0].Unit if dcol else DBNull.Value