Shape optimization
Hello
I made shape optimization in Optistruct, Shape 1 is undercut at one level, shape 2 is undercut higher. I want to check optimum high from stresses perspective. In optistruct gradient method MFD its working. I wanted to use GA algorithm in hyperstudy to check difference.
I defined model, resource as hm file, solver input as fem file. Solver optistruct.
Now, I input variables, there are that two shapes. Should i pick them both? What about response? Should i find h3d which hyperstudy made and define element number and it stresses? can i pick global stresses?
I am not sure how hyperstudy will change high of that cutout, how to define that to have min stress in results.
Jakub
Answers

Hi,
Please find below the answers of your questions.
Should i pick them both? Yes, if you are interested to figure out the optimal values for two of them. Once variables are imported in HyperStudy, you can specify the variables types (discrete or continuos) as well as the ranges of variations (it defines the search space for the optimizer).
What about response? Once you have run the evaluation (OptiStruct solving), you can define the responses of interest.
Should i find h3d which hyperstudy made and define element number and it stresses? The results can be extracted from the h3d generated by OptiStruct. This h3d file is easily read in HyperStudy by using the Readsim reader. I'd suggest you to Drag&Drop the h3d in HyperStudy working area. It expands the File assistant that guides you in the responses creation.
For the stress results, you can either define a request with specific element numbers or keep the default FirstLast.
can i pick global stresses? Yes, You can extract any values available in the h3d. If needed you can manage vectors using the HyperStudy tools.
Kind regards,
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