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help on how to manage 1D and 2D elements in a mesh ?

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  • help on how to manage 1D and 2D elements in a mesh ?

    Posted by bereux at October 19. 2006
    Hello,

    for an electrical engineering application I have the following very simple case :
    - a rectangular finite-size ground plane (e.g. 2 m x 1 m in the Z=0 plane),
    - a wire lying above the ground plane (e.g. Z=0.1 m, Y=0 m,  1  m long along  X direction).

    I would like to mesh this model with :
    - 2D triangles (e.g. 0.2 m average length) for the ground plane,
    - 1D triangles (e.g. 0.02 m average length) for the wire
    and export this mesh as a .unv file.

    I did the following :
    in GEOM :
    create a face (for the ground plane)
    create a wire (for the wire)
    ...but I do not know if it is possible (and how to do) to merge them in a single geometry (I tried a "fuse" but "operation can not be performed on the given shapes";).

    Nevertheless, I went to MESH:
    I created a Mesh for the ground plane,
    I created a Mesh for the wire,
    but I do not know how to merge them in a single mesh.

    I would be very grateful for any help on how to proceed.
    Best regards,

    François
    • Re: help on how to manage 1D and 2D elements in a mesh ?

      Posted by Grigory Zhivotovsky at October 20. 2006

      Hello, François

      To solve your problem create compound in geometry module. Follow scenario

       

            in GEOM :

       

      1. Create a wire, create a face (for the ground plane)
      2. Create 2 vertexes, create an edge (for the wire)

       

      3. Build compound combining 2 objects: face and edge

       

       

      In MESH:
      1.  Create a Mesh for compound with Triangle Mefisto, Length from edges 2D hypothesis, Wire discretization, Average length 0.2 1D hypothesis

       

      2. Create a SubMesh for edge with Wire discretization, Average length 0.02 1D hypothesis
      3. Compute a single mesh.

      4. Export this mesh as a .unv file

      5. Enjoy results



      Best regards,
      Grigory

      • Re: help on how to manage 1D and 2D elements in a mesh ?

        Posted by bereux at October 23. 2006
        Hello Grigory,

        thank you for your help. It works fine.
        Best regards,

        François
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