Error 2418

Anasy
Anasy Altair Community Member
edited October 2020 in Community Q&A

Hi I am doing some topology optimisation of a 2D engine pylon and I am getting ERROR # 2148 ***  Invalid design problem.  All the sensitivities of response 1 (objective) are zero. I have attached my model and can you please tell me what to do to get rid of this error?
 

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Answers

  • Adriano_Koga
    Adriano_Koga
    Altair Employee
    edited June 2020

    You're actually missing the property thickness, which is blank/Zero.

    Always run a analysis only run before the optimization to make sure the model runs fine.

    You can also check the model before running, in HyperMesh, using Model Checker (Ctrl+F>>model checker Optistruct).

     

    The other point is that your force is applied to a 'flying node' which is not connected to anything, thus no load is applied to the pylon structure, thus no result will be found.

     

     

    image.png.18c71d7a0c47cfc850d88313c583612c.png

     

    image.png.aadc93222d772c09c230e69848e02d5e.png

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