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Composite Free Size Optimization - Mass Constraint Offset

User: "lknarre"
Altair Community Member
Updated by lknarre

Hello CAE Enthusiasts,

 

Im currently trying to do a Free Size optimization on a composite model which is built on a ply based approach. After all, it seems that the Optimization is running fine. I got a feasible design after 7 Iterations and all constraints are satisfied.

However, if i import my optimized FreeSize.fem into HyperWorks again the weight is off by 22.5 %. My optimization constraint is a weight of 600 grams. As a result I got roughly 735 gramms. The objective of this optimization is to minimize weightedCompliance. 

 

I tried several attempts to figure out what is wrong but i don`t get it. I would be glad if someone would get a hint or could take a look at the attached model.

Thanks in advance. StaySafe and greeting from Germany.

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