Reply To: Nonlinear (inelastic) buckling analysis of clylindrical column

[dlooman]

I don't think that message is the issue.  Another way to do a non-linear buckling analysis is to simply run the static analysis with an applied displacement until buckling occurs.  A non-linear eigenvalue analysis is a buckling analysis is still linear in the sense that the analysis is done based on the model stiffness at the end of the static.  The static needs to have a load large enough to reach the plastic portion of the stress strain curve to be different from a linear eigenvalue analysis.