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Import problem

Can anybody help me with this? I think it might be a simple problem.

Sometimes when I import a geometry on OptiStruct, which is an assembly, the software does not recognize one of the parts as a solid. So, it is not possible to mesh it or to do anything else. The picture below shows an example of this, with the topology view.

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QuyNguyenDai

You can create your solid from closed surfaces.

Nayara Lacerda

You can create your solid from closed surfaces.

Thank you.
But even so, I get the error "Volume Analysis: no solid selected. (no error highlighted) Meshing failed". And even when I delete the component and use the mesh created (^temp_2d_for_tetra) I can't run the analysis because the software does not recognize the elements. And because of that I can not create a contact surface either. Therefore, I get a lot of errors when running the analysis. Do you know what might be causing this problem in the when importing the geometry?
Thanks a lot.

Nayara Lacerda

Thank you.
But even so, I get the error "Volume Analysis: no solid selected. (no error highlighted) Meshing failed". And even when I delete the component and use the mesh created (^temp_2d_for_tetra) I can't run the analysis because the software does not recognize the elements. And because of that I can not create a contact surface either. Therefore, I get a lot of errors when running the analysis. Do you know what might be causing this problem in the when importing the geometry?
Thanks a lot.

In case anyone has the same problem, I solved it by changing the file format. It was in IGS format and I changed to STEP and it worked.