Summary of results
======================

Option RIGI_ROTA worked properly.

In the case of B, C and D models, beams with 8 elements give the solution with a relative error of less than 9.10-5%. With a single element the error is only 0.6%. In comparison, in the case of modeling A, 3D elements with 200 elements give the 0.01% solution. This is due to the fact that the solution is integrated almost exactly with the beams.

In the case of modeling E involving a beam with a variable cross section, the beam elements with 8 elements approach the reference solution with a relative error of 0.1%.

Note the increase in axial displacement compared to the case without stiffness (SSLV104 [:ref:`V3.04.104 <V3.04.104>`]).