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Can I add symmetry manufacturing constraint in Ply Stacking Sequence Optimization ?

User: "Altair Forum User"
Altair Employee
Updated by Altair Forum User

In DSHUFFLE card, we can select three options including MAXSUCC, PAIR ,CORE/COVER(see figure attached). But, the plies of  laminate structure is requested to be symmetric.How can I add this constraint in shuffle optimization ??

 

 My firend ask me to test  what will happen if  'PAIR 0 90 SAME' in DSHUFFLE card is added in .fem file. But Solver FAILED, the error message is ' BALANCE and PAIR constraints are only valid for 45.0 and -45.0 orientations at this point.'   Hope someone can help me, thanks very much!

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