I am a beginner of the nonlinear NX nastran.
I would like to calculate the post-buckling process: the plate deflection grows up but the load grows down as the shown in the attached figure. I also attached the .modfem file as the example.
Can anybody kown how to do it?
In SOL601，you can choose LDC method to trace the post-buckling behavior. In SOL106 the arc-length method can be used.