Element Check on Tetra

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

Dear all,

 

I have a problem regarding element quality for TETRA element. When the mesh quality is not good, analysis that runs on OptiStruct exit, with errors. Violated items are shown in the .out file, as shown below:-

 

Acceptable range violations:

------------------------------------------------------------------------------
 Element     Property    # of     Acceptable Range    Max.  Viol.  Elem.
                                     Viol.     Lower        Upper    Value  type    No.
 ------- -------------------  --------  ------------  --------- ---------   ---    -------
 TETRA   Edge Angle       4            --          87.00     87.39   U   1963035

 

Any ideas on how to counter this issue/perform TETRA element check? I ususally do F10 for trias, but for 3-D? Regards

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2015

    Maybe my screenshot can help you?

    <?xml version="1.0" encoding="UTF-8"?>post-889-0-15303900-1440668325_thumb.png

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2015

    Hi Nguyen,

     

    Unfortunately, I've tried that but not successful.

     

    I'm currently try to fix the 4 problematic elements manually (find the elements by id and modify)

     

    Thanks anyway for your idea  image/emoticons/default_smile.png' alt=':)' srcset='/emoticons/smile@2x.png 2x' width='20' height='20'>

  • tinh
    tinh Altair Community Member
    edited August 2015

    Hi,

    output message says 'Edge Angle' so perhaps it is right for F10>3d check angle,

    just enter 87.0 into 'tria faces max angle' on F10 panel then check your model

     

    If it says 'Face Angle' maybe you'll need a template to check dihedral angle (abaqus specification)

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