How to find a Quad with only 3 nodes under hypermesh

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

Hello,

I would like to know the method to detect a quad with only 3 nodes (instead of triangle definition)  that can create problem under another software like Ansys (shell181) : QUAD N : Node1 Node2 Node3 Node(1 or 3) for example 

thank you for your help

patrick

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Answers

  • tinh
    tinh Altair Community Member
    edited March 2018

    Hi,

    if the quads have 2 nodes sharing same position, they will have minsize = 0, so please check F10>min length 0 (set calculation as 'shortest edge'), you will catch the quads

  • Sanjay Nainani_20973
    Sanjay Nainani_20973 New Altair Community Member
    edited March 2018

    Hello,

     

    From my understanding, quads are 2D elements with 4 nodes. The element will be a tria when there are only 3 nodes. You can find a element based on their configuration i.e. tria or quad in HM by using 'by config' in the selector.

     

    Thankyou

     

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited March 2018

    This kind of quad has very bad Jacobian.

  • tinh
    tinh Altair Community Member
    edited March 2018

    Yes, it's bad. I heard from my teacher that this degenerated quad is used for crack simulation

     

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