size optimization

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

hello,
i'm doing a size optimization in order to match the drequencies targets for the first 10 modes.
so i defined my design variable wich is the PBUSH stifness k1..k6
and as and objective is the MIn using DSYSID (iwth all the 10 first frequancies and the targets) but some how i don't have the right results thats i want
i have in my model 

DESVAR refered to stifness of PBUSH
DVPREL1

DRESP1

MIN WITH a DSYSID

everythings is well defined i don't if there something else to add to my optimization to work 

 

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