Title says it. I wish to learn the approach for programming (with FE, or with alternative discretized models) the warping deformation for each point in an arbitrary cross-section, knowing the contour of the cross-section and the external forces that are applied. Do you know of any book showing this topic? (preferably a book written from a programmer or engineer perspective).
I have found several books describing torsion, both for free-warping and constrained warping torsion, but not a practical description for finding the warping deformation at each point in the cross-section.