I am trying to create the substructure of the component with some interface nodes (with master degree of freedoms). Although I am able to generate the .sub and .cdb file to create the .fbi file flexible multibody dynamic analysis of the component, but the generated .cdb, .sub file from the Ansys apdl does not contain any geometry stiffening information. It leads to fail the flexible multibody dynamic analysis in simpack.

How to create the aforementioned files ready for generation of the .fbi?

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