Dear all,
In the course of preparation, I would like to found out the options of beam calculations referring calculix. I would like to calculate the following. (with U1 userbeams)

A static analysis of timoshenko beam considering the sehar deformations (open section)

a linear buckling analysis of the system

The calculation of the plastic capacity load (limit load)
If I am properly informed its not possible to to a geometric nonlinear calculation with U1 elemts?
thank you
LG