Reply To: Bending moment and shear force diagram

[peteroznewman]

Bending moment and shear force diagrams have nothing to do with the materials. They only have to do with the loads and supports. If you have a 3D solid block of the correct length, not what you have shown with all the details of the inner foam core and outer shell, but a plain solid block, you can use the Prepare tab in SpaceClaim to extract a Beam model. Bring that into Mechanical and apply the supports and loads then solve. It doesn't matter that the material is Structural Steel.

You need to define Construction Geometry, a Path along the length of the beam.  Then under Beam Results, insert a Shear-Moment Diagram. Set the type to Directional Shear Moment and select the VY display.  Look at this discussion for an example.