Fixing Vol Skew in Solid Mesh Optimization

awe901
awe901 Altair Community Member
edited October 2020 in Community Q&A

I have a model that uses 2nd order tetras using the Optistruct solver for Hypermesh 2019. I have used the automesh feature to mesh my 3D solid. For some reason, the vol skew metric under Solid Mesh Optimization has ~80% of my model exceeding the thresholds. I've tried remeshing but that doesn't fix this. Does anything have a recommendation on how to resolve this problem?

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Answers

  • Adriano Koga_20259
    Adriano Koga_20259 New Altair Community Member
    edited October 2020
    Usually it is recommended to mesh first the skin and get a good quality shell mesh and then mesh the inner volume using the tetramesh. Another alternative to get a nice quality mesh is to use SimLab. Besides correcting the mesh, there's another option (not ideal) that allows you to ignore some of these errors. You can use the PARAM, CHECKEL, NO This will ignore at some extent the element check. Only really critical mesh issues will error out. But again, this should be only your last resource or if you just need a quick run.
  • awe901
    awe901 Altair Community Member
    edited October 2020
    Adriano Koga_20259 said:

    Usually it is recommended to mesh first the skin and get a good quality shell mesh and then mesh the inner volume using the tetramesh. Another alternative to get a nice quality mesh is to use SimLab. Besides correcting the mesh, there's another option (not ideal) that allows you to ignore some of these errors. You can use the PARAM, CHECKEL, NO This will ignore at some extent the element check. Only really critical mesh issues will error out. But again, this should be only your last resource or if you just need a quick run.

    Wonderful. I will mesh the skin first then! Thank you

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