Optistruct responses

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

Hi

 

I am trying to optimize a part for which I have to reduce its weight and maintain its strength at the same time.

What responses and constraints am I supposed to give ? And based on what grounds should I decide this ?

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited January 2016

    `Hi,

    What type of optimization you are looking at?

    There are few commonly used/suggested topology formulations are furnished on OptiStruct help. You can refer to those to start with.

    <?xml version="1.0" encoding="UTF-8"?>Capture.JPG

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited January 2016

    Hi Prakash,

     

    I am trying to do a topology optimization for my part and the main goal is to reduce its weight at the same time support the loads. Correct me if I am wrong.

     

    For increasing/maintaining the strength, I am giving min weighted compliance as an objective function and the yield stress of the material as a  stress constraint.

    OR

    For reducing its weight, if I give min Volume fraction as objective function and the yield stress as stress constraint.

     

    Which one is correct ?

     

    Also, i couldn't find the above screenshot in the optistruct help. Can you direct me to it ?

     

    Thank you

    Vignesh

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited January 2016

    Hi Vignesh,

     

    I personally prefer using volume fraction as a response instead of stress because minimizing compliance means increasing the stiffness and constraint on stress doesn't really fit your requirement.

     

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited January 2016

    Hi Prakash,

     

    Thank you for the response. I will work on it and get back to you if I face any trouble.

     

    Vignesh Dakshnamoorthy

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