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Problem with structural optimization : Optimization region

- October 27, 2024 at 7:10 pm
  
  258344
  Subscriber
  
  Hi, I have problem with this question mark in Optimization region.
  
  I have everything set, but the opti region does not want to be confirmed.
  
  Does anyone have an idea, how to solve it?
- October 28, 2024 at 12:06 pm
  
  Deepak
  Ansys Employee
  
  Hi,
  
  Please check whether the Design region bodies are selected the same in both the Optimization Region and Design Constraint.
  
  Regards,
  Deepak K.
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- October 29, 2024 at 7:23 pm
  
  258344
  Subscriber
  
  My main problem was when I connected optimization to static structural. At that moment, a question mark appeared here, and nothing could be done about it. I have selected regions in all different ways.
- February 17, 2026 at 10:49 am
  
  abdullokh.orifjonov
  Subscriber
  
  In my case, it seems that Optimization Region shows “?” sign due to a presence of nonlinear contacts. The Ansys help lists nonlinear contacts as a known limitation of a Density Based topology optimisation method.
  
  Solution: use only linear contacts (Bonded or No Separation) if you can. If you insist on keeeping nonlinear contacts, enable Beta Options in Workbench Options > Appearance.

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