size optimization
Altair Employeehello
i want to size optimization in 1d truss
constraint: stress, buckling
objective : minimize weight
but it doesn't work ,
I attack model file
so please help me sir
Answers
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hi Prakash Pagadala
Thank you for your answer.
but I also want to add buckling conditions
it that conditon which combine buckling conditions ?
In load steps conbine buckling condition , but I think buckling conditon were not used in size optimization.
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I see that there are negative buckling modes in your model. Negative buckling modes suggest an instability in the model and they mean that the structure would buckle when the direction of the load is reversed i.e. for a member under compression, negative buckling modes indicates that the member would buckle if it is subjected to tension, which does not make sense. So, I suggest you check if the constraints and loads in the model are applied properly and rerun the job.
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