How can I set part's inertia as an constrain for topology analysis?

Daf
Daf Altair Community Member
edited March 2021 in Community Q&A

Hi,

 

I am try to optimize a part with topology analysis to meet 1st response frequency with minimum part's inertia.

 

How can I set inertia in OptiStruct topology analysis? Seems inertia not able to simply defined as mass or volume.

 

Thanks.

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Answers

  • Adriano Koga_20259
    Adriano Koga_20259 New Altair Community Member
    edited March 2021

    you can create a response (DRESP1), of type 'inertia', and select the axis.

    then you cna point it as your objective or constraint, depending on what you want.

    image

  • Daf
    Daf Altair Community Member
    edited March 2021
    Adriano Koga_20259 said:

    you can create a response (DRESP1), of type 'inertia', and select the axis.

    then you cna point it as your objective or constraint, depending on what you want.

    image

    Thanks for help on it.

     

    Could you help explain more about constraint and objective? As I want to optimize part to meet 1st response frequency requirement with minimum part's inertia (say optimize the part to achieve 100Hz response with minimized inertia), frequency should be set to constraint as it have a clear target and inertia should be set to objective as I need to minimize it?

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