Adjoint or Direct Method for Optimisation Sensitivities
Altair EmployeeHi
The Optistruct User Guide says that sensitivities are calculated in the Optistruct using either the Adjoint or Direct Method. I am working on a size optimisation and have a large number of design variables and constraints - the outfput file tells me that the solver is using the direct method. Is it possible for the user to choose which method is used? I'd like to see if I can get the same optimum more effeciently using the Adjoint method.
Cheers
Answers
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Hello Erica,
i met with the same situation during Topology Optimization and was curious to know if you were able to find the solution for the same. If so, it could be of great help if you could share the same.
Thanks!
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This is only the description about how Optistruct works under certain constellations.Optistuct is choosing the right method for you automatically.There is no parameter for you to influence it.Use DOPTPRM, OPTMETH to change the default.
https://community.altair.com/community?id=community_question&sys_id=0a46cc761b2bd0908017dc61ec4bcbc10