[Ipopt] Start in positive area with optimal solution in negative area

"Michael Gißler" michael.gissler at gmx.net
Fri Jan 20 08:49:52 EST 2012

Is it possible for IPOPT to optimize a NLP where the objective starts in a positive area but has it's optimum in negative one?

I try to run several structural topology optimizations which work quite well except that one special case.
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