1. Simple patella cartilage over femoral cartilage compression.
2. Both geometries rotated in Blender to overlap each other.
3. Femoral cartilage truncated to only include surface overlapped by patella cartilage.
4. Meshed stl files in Salome.
5. Exported as .unv.
6. Converted to .inp using unv2abaqus.py
7. Removed surface elements from the .imp files manually.
8. Imported in FEBio preview. Build simple compression model.
9. Exported as .feb and ran in FEBio.