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Error running Laminate optimization

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Use Tools>Model Checker>Optistruct to find modeling errors.


In your model there are modeling errors:

-no thickness was defined in the non-design property

-material UD-1200 had E2=0 however UD plies have some transverse stiffness http://www.performance-composites.com/carbonfibre/mechanicalproperties_2.asp

-no Poisson's ratio was assigned on material BIAX-300-590



Construction was not connected to plating, so I have defined TIE contact using tools>contact browser>AutoContact 



The loads and boundary condition are incorrectly set up. The model should be properly constrained to prevent rigid body modes and unreasonable deformations. 

I have undefined the SPC in the load step and set up inertial relief (PARAM>INREL>-2) instead, but the deformation is still unreasonable. Check the relevant literature on how such problems are constrained. The other model attached is constrained in all DOFs (encastre). 




Once all these issues are resolved in the baseline model, you will be able to run optimization:


alte1500 likes this

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