Postbuckling analysis by RIKS not converging
Postbuckling analysis by RIKS not converging
(OP)
After knowing my structure is going to buckle at a certain point using linear buckling analysis, I proceed to find the postbuckling behaviour. No matter what I do, the analysis fails to continue after the buckling point. I have tried RIKS, STABILIZE, dampers and even increasing the tolerances by *CONTROLS. Does anyone have any suggestion as to what I shall try next?
RE: Postbuckling analysis by RIKS not converging
If you go far enough into the post-critical regime and close to a crash or expect discontinuities in shape, Stabilize will do (it's a energy transfer issue).
The examples in the doc are quite clear with respect to these issues.
What's the error message?