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Hello, i am performing a topographie optimization of a hat-shaped beam unter 3-point-bending with HyperMesh and Optistruct. My aime is to minimize the compliance beneath a certain value (objective minimize compliance, constraint compliance < 14000), without exceeding a certain mass (constraint m < 0,000553) In the optimization controls i have limited the maximum number of iterations to 100 and the convergenze criterion to 0,000001. When i start the optimization, optistruct only performs the inital analysis and one optimization-iteration. The compliance of this one and only optimization-iteration is lower then the inital compliance but higher then the desired compliance. Why does optistruct dont perform additional iterations? Thank you very much for your help! With kind regards Tim Winkler