How can I combine edges/lines in Hypermesh?

JELO
JELO Altair Community Member
edited November 2023 in Community Q&A

Hello,

after creating a geometry (solid) out of a FE-Mesh, there are many lines/edges in the geometry. For meshing I can use the edge edit -> toggle funtion. But when I export the model as a step-file to Abaqus the lines are still visible. Is it possible to delete or combine these lines completely?

thanks in advance

Justus

image

Answers

  • Jason_Craanen
    Jason_Craanen
    Altair Employee
    edited November 2023

    Hello,

    As far as in Hypermesh, the only option to remove those surfaces edges permanently is to Unsplit them. But that only typically works one edges you have manually created.

    If you suppress them, they will only be ignored during meshing.

    On CAD creation there should be an option to simplify or adjust the edge tolerance.

    Is there a reason you are creating CAD in Hypermesh and not meshing?

    Thanks

    jason

     

  • JELO
    JELO Altair Community Member
    edited November 2023

    Hello,

    As far as in Hypermesh, the only option to remove those surfaces edges permanently is to Unsplit them. But that only typically works one edges you have manually created.

    If you suppress them, they will only be ignored during meshing.

    On CAD creation there should be an option to simplify or adjust the edge tolerance.

    Is there a reason you are creating CAD in Hypermesh and not meshing?

    Thanks

    jason

     

    Hello, yes there is a reason. I created the geometry because I got a FE-Mesh without the solid. So I could create the geometry out of the FE-Mesh. Thanks for your response
  • Jason_Craanen
    Jason_Craanen
    Altair Employee
    edited November 2023

    Hello,

    My question is more why aren't you continuing the meshing in Hypermesh as well. Here you can clean those surface lines by suppressing them and the mesher will ignore them.

     

    The surface edges are part of the CAD created from the mesh topology and cannot be removed.

    You can try changing the complexity and tolerance on surface creation to see if that helps.

    https://help.altair.com/hwdesktop/hwx/topics/pre_processing/geometry/surfaces_create_from_fe_t.htm

    image

     

    You could also try using stl instead.