Solution Request for Error 832

Omer Can DABAK
Omer Can DABAK Altair Community Member
edited April 2022 in Community Q&A

Good afternoon.

I am using FEKO in order to get platform installed antenna pattern.

In our project, I get the platform model as a surface model.

When I mesh the model without changing any thing on model, I take multiple same errors for which one of the errors is given below.

'The triangles 15299 and 123263 touch, but they do not have a common edge.
Received message from server process 2:
ERROR 832: Segmentation rules have been violated (two triangles touch without a common edge)

Aborted: 2022-04-21 16:33:13'

How can I solve this kinds of errors?

Should I check all of the erroneous edges and triangles.

I couldn't share the .cfx file or out file due to security related things.

Thank you.

Regards

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Answers

  • Jaehoon
    Jaehoon
    Altair Employee
    edited April 2022

    When working with imported geometries, if the edges on two sides of an intersection are not properly aligned, the mesh/triangles on either side of this intersection won’t share common edges.

    image

    Without common edges between triangles, they can’t be treated to be connected and hence the error.

    Please check first the mesh error between triangle 15299 and 123263 by using POSTFEKO > Mesh > Find elements in 3D view. (The .out file shows more information about this error.)

    If there are only few of these erroneous triangles/edges, you can fix the CAD or the Mesh.

     

    To fix the  mesh, you need to do "Unlink mesh" from the original geometry and fix the erroneous mesh(es) in the unlinked mesh. 

    image

    You can use the following menu to select the meshes.

    image

    However, if you have too many of them, manual fixing is tedious and you may need to use HyperWorks (as there are no auto repair options in Feko to fix that kind of mesh).

     

    I hope it is helpful for you.

  • Mel
    Mel Altair Community Member
    edited April 2022

    You can also try enabling Connectivity on the Display Options tab.

    Sometimes the mesh triangles seem to align but when you zoom in many times you can see small gaps.

    image

    image

    You can try to stitch the geometry faces these triangles belong to:

    Copy out the unconnected faces from the part from the details tree.

    Stitch these copied out faces. 
    Then delete the original faces from the original part in the details tree.

    Union the "new" faces with the original part. 

    Sometimes though the Union operation could fail. This often happens if you try with too many faces at once.

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