Refining 2D Surface Mesh

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

I am trying to mesh a very complex set of 2D planes which intersect at varying orientations.  THe first image shows an example of the type of geometry I am working with.

 

I am able to mesh the geometry, however, the numerical simulation is not very stable due to some of the extreme distortion of elements at some of the intersections.

 

I would like to know if there is a way in HM to refine these problem areas automatically. Is there a threshold value that I can adjust. I am new to this software and also to finite element meshing in general.

 

I also attached a picture of some of the problem areas I am referring to.. you can see in the black circles that some of the elements are collapsed and therefore very small relative to the nearest neighbour.. I think this is the problem. How can I control this to get some sort of refining in these areas.

<?xml version="1.0" encoding="UTF-8"?>eg4.png

<?xml version="1.0" encoding="UTF-8"?>eg5.png

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016

    Hi,

     

    the picture is not clear to me.

     

    anyways, I would suggest to have a minimum and maximum element length over a global length. Use QI optimize option to have a better element quality.

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited June 2016

    At your place; I'll try fix that manually. By this way, I'm sure for quality of the mesh.

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