Answer:
For solids, no internal forces are available in the program. Converting stresses into internal forces would also be very complex, because not only would mx, my, and mz be available, but also the torsional components mxy, myz, mxz , as well as shear and axial forces. In the case of solids, one is usually limited to the direct stress evaluation.
If you still need internal forces, you have the possibility to refer the internal forces of a solid to a member. The result beam has been implemented in the program for this purpose.
