Element normal

sumitbabbar427
sumitbabbar427 Altair Community Member
edited October 2020 in Community Q&A

Need some information regarding element normal.
As per my knowledge element normal represents the positive side of shell elements but when I display both color as well as vector display opposite nature observed. Element normal representing negative side(i.e. red)
I defined thickness in negative direction(i.e. SNEG) and it is offsetting the elements outwards that means HM is following color display convention. Is it HM bug or something I am missing?

 

<?xml version="1.0" encoding="UTF-8"?>Capture.JPG

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited October 2018

    Hi @sumitbabbar427

     

    In HM RED represents Positive. 

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

  • sumitbabbar427
    sumitbabbar427 Altair Community Member
    edited October 2018

    Thank you for update.

    If red is positive (which means vector representing face is positive) then why upon defining SNEG in property element thickness offset in outward/positive direction? Refer picture shared earlier

  • sumitbabbar427
    sumitbabbar427 Altair Community Member
    edited November 2018

    Any update pls?

  • Simon Križnik
    Simon Križnik Altair Community Member
    edited November 2018

    Hi @sumitbabbar427,

     

    the explanation offered by @Prakash Pagadala is consistent with the screenshots you presented. 

     

    How about just reversing the normals?

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