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Optistruct Optimization creates 1000 plies

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Hello everybody,


I'm not entirely new to FEA analysis but I'm struggling with Optistruct at the moment.


I have a Formula Student Monocoque which I am trying to optimize to work with unidirectional carbon. I'm trying to create an optimum lay-up that's as light a possible while being as stiff aswell.

I followed the guide "tutorial composite optimization with optistruct 11.0 on the example of a formula student monocoque" to the letter but somehow the Optistruct Optimization creates almost 1300 plies... Which is is impossible to manually adjust the zones...


Could somebody have a clue what's going on here? Maybe I'm doing something wrong in the OptiStruct settings? I should have only 4 plies per original ply on default... 


Thank you in advance! I attached the model file.





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There is a problem with the update and it because of that OptiStruct is creating more than expected number of plies.


Developers are fixing this and should be cleared soon. 


Can you run the size optimization and check if that provides any good results with the same 1000+ with a TMANUF or PLYMAN?

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