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How can I perform an optimization study step with load ramping

Posted Jul 18, 2020, 5:10 p.m. EDT General, Optimization, Studies & Solvers Version 5.5 0 Replies

Fernando J. Pena Cantu
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Hi I am solving a non linear problems that has difficulties converging. To improve the convergence of my system I perfom load ramping as stated in this article Improving Convergence of Nonlinear Stationary Models. For this perform an auxiliary sweep as shown in the article above.

My problem comes when I add an optimization study step. When I run it having the auxiliary sweep activie, I get the following error "Undefined function at the first feasible point. Returned solution is not converged."

Would anybody know what is happening?

Thanks!

0 Replies Last Post Jul 18, 2020, 5:10 p.m. EDT
COMSOL Moderator

Hello Fernando J. Pena Cantu

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