Error 15

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

*** WARNING: The thermal expansion coefficient of material 2 is zero

WARNING # 1601

2 elements had incorrect node numbering sequence and had their nodes renumbered.

This will affect the orientation of respective element coordinate systems.

Use PARAM,PRTRENUM,LIST to print the detailed list of renumbered elements.

ERROR # 15 FROM SUBROUTINE volint

CHEXA element 6825 is distorted (negative Jacobian).

***** FATAL INPUT DATA ERROR *****

ERROR # 15 FROM SUBROUTINE volint

CHEXA element 6827 is distorted (negative Jacobian).

...

can anyone help me???

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2008

    Did you try param checkel no ?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited September 2011

    Hi,

    I am also getting similar errors. I tried setting param chk elem. to NO but it still doesnt work. What else can be done? Expecting your reply,

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited September 2011

    You should have a closer look at the elements which produce the error. You may need to improve mesh quality in these areas. 'Param checkel no' should be used with care since it can have negative influence on the result quality.

    Regards

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2012

    Have you solved the pronblem??

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2012

    have you solved the problem??

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2012

    *** WARNING: The thermal expansion coefficient of material 2 is zero

    WARNING # 1601

    2 elements had incorrect node numbering sequence and had their nodes renumbered.

    This will affect the orientation of respective element coordinate systems.

    Use PARAM,PRTRENUM,LIST to print the detailed list of renumbered elements.

    ERROR # 15 FROM SUBROUTINE volint

    CHEXA element 6825 is distorted (negative Jacobian).

    ***** FATAL INPUT DATA ERROR *****

    ERROR # 15 FROM SUBROUTINE volint

    CHEXA element 6827 is distorted (negative Jacobian).

    ...

    can anyone help me???

    Error description will guide you to the solution, use PARAM,PRTRENUM,LIST to print the detailed list of renumbered elements and then go to these elements and check them again in your preprocessor.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2013

    'Param checkel no' hold true only for the quality deviation and not for basic requirement of the solver. solver will not go ahead if you have elements with negative jacobian.

    Just define your problem in tetra mesh if you are unable achieve good quality with hexa.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2018

    Hey. 

    Same problem. I used the tetra mesh and error 15. :-( How could I make it work? 

    Thank you

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2018

    Hi,

     

    can you share the entire .out file, please?

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