How do I convert a 3D CAD Model into a 1D line model?

How do I convert a 3D CAD Model into a 1D line model? I have an aircraft wing 3D CAD Model.
It has something to do with equivalent stiffness. Preferable Software: ANSYS
How do I convert a 3D CAD Model into a 1D line model? I have an aircraft wing 3D CAD Model.
It has something to do with equivalent stiffness. Preferable Software: ANSYS
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