Measure displacement with an external point

Chris84
Chris84 New Altair Community Member
edited October 2020 in Community Q&A

I'd like to create a displacement response (also an optimisation constraint), which is measured at a point outside of my geometry. I tried to fix him to my geometry with an RBE2 element, but that made the RBE2 stretch and the point stayed where it was. I'd like the point to move by the same amount a / some nodes of my component move after applying a force. How can I achieve that?

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Answers

  • Adriano A. Koga
    Adriano A. Koga
    Altair Employee
    edited August 2020

    are you sure the RBE2 is using all DOFs? 

     

    You can try to use a RBE3 for this, as the central node will give you an 'averaged' displacement.

  • Chris84
    Chris84 New Altair Community Member
    edited August 2020

    That definetely worked for the static analysis, but I'm still not sure about the topology optimization. I'll keep trying and report back, if I don't get that to work

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