reduce step size
Altair EmployeeHello,
i am running a free-size optimization and i want to reduce the step-size between the iterations. The steps optistruct takes are very large and after a few iterations the design is not feasible anymore. The optimization converges, but does not get back to a feasible design.
The objective is to reduce mass with 2 displacement constraints.
The % changes are:
Iteration 0: feasible design, no violation of responses
Iteration 1: -27,54%, infeasible, violation
Iteration 2: -27,39%
Iteration3: -6,88%
Can you explain to me, why the steps are so large and after Iteration 1 the increment is not reduced.
The online help proposes the DELTOP-option on the opticontrol panel. I have run an optimization with each a value of 0,5 (default), 0,01 and 20. How do i adjust the DELTOP-variable corretly, beacause the step size did not change.
Regards,
Alexander
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Altair EmployeeThis was much easier than i thought. I was sure that i checked the box.
With 0,1 the max %-change = 10%...works very fine!
Thanks alot!
please make sure that you have checked on the box next to the DELTOP