How to solve Error 312 in HyperMesh Optistruct?

Shalmi Gurunathan
Shalmi Gurunathan Altair Community Member
edited February 8 in Community Q&A

Hi, I am trying to perform topology optimization for an airfoil to optimize volume fraction and weight, however I am getting the error 312 compliance is large or negative, and i have checked other forums and tried to change material properties, change constraints, and now i am at my wit's end. i am fairly new to this software as well so if you have any suggestions please be detailed. I have attached my hypermesh file. Thank's in advance.

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Answers

  • Johan Dahlberg_20306
    Johan Dahlberg_20306
    Altair Employee
    edited February 8

    Hi Shalmi
    Try to make part of the model as "non-design" space and make sure that it's connected to the rest of the model
    Constrain the non-design part with SPC in all dof (1-6)

    Also check so that the model run as "baseline" , without optimisation

    -check so you dont have any lose parts!

    Good luck!
    /johan

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