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Hello everyone. I got some pretty strange behaviour of my Solution.


1. The canister seems to float away since the displaced surface at the bottom belongs to the canister



2. The canister itself moves up/down to the plates. In fact it stretches against the plates.






general Model: I try to simulate the pressure of the upper plate on the canister, which is limited by the solid lower plate. The Model file is in the attachement.


Thanks for your help


P.S.: I'm pretty much a beginner in Hypermesh/Optistruct


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You have free edges in your model(Canister component).See attached screenshot.Please clear free edges and run nonlinear analysis.


You can also request  free eBook on OptiStruct Nonlinear analysis using below link.



Free edges in Red color.JPG

STEz3ro2 likes this

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Hello Rahul,


thanks for your answer. I see the problem with with the free edges but is this also the problem I experience?


I can´t really imagine how free edges could effect the model in the way they seem to do.




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