error % radioss

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

I launch a crash calculation and from the start the augment error until 99% !! any idea please ?

 

CYCLE    TIME      TIME-STEP  ELEMENT          ERROR  I-ENERGY    K-ENERGY T  K-ENERGY R  EXT-WORK MAS.ERR

     0   0.000      0.2568E-04 NODE    13021422   0.0%   0.000       0.000       0.000       0.000      0.4979    

     ANIMATION FILE: Front_Debug_12A001 WRITTEN

   100  0.3658      0.4093E-02 NODE    13009464  99.9%   1.169       511.3      0.6503E-04  0.4566      0.5212    

   200  0.9672      0.5874E-02 NODE    13001166  99.9%   7.064       586.1      0.8589E-02   21.06      0.5218    

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2015

    Hi Oggy,

     

    Please check for initial penetration in your model.

     

    When you have initial penetrations,  If you are using Igap=0  then reduce the Gap_min value to clear the penetrations.   If you don’t wish to do this,  use INACTI=6.

  • oggy
    oggy Altair Community Member
    edited March 2015

    i'm using hypercrash not hypermesh for pre-processing 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2015

    In HyperCrash, Goto Quality>> check intersections of tree selection for intersections and penetration (shell elements) check.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2015

    hi, 

    I have this problem:

    CYCLE    TIME      TIME-STEP  ELEMENT          ERROR  I-ENERGY    K-ENERGY T  K-ENERGY R  EXT-WORK MAS.ERR

         0   0.000      0.6438E-04 SPRIN     614559   0.0%   0.000       0.000       0.000       0.000       0.000    

     

         RESTART FILES: Calcul3_0001_[0001-0001].rst WRITTEN

         -------------

  • jsk459
    jsk459 Altair Community Member
    edited March 2018

    Hi @Prakash Pagadala

     

    I have also encountered the same problem and i have checked my initial penetrations where i have kept IACTI=6 already. 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2018

    Hi,

    By using Inacti=6 the nodes will be slightly depenetrated but if the penetration depth is more this option will not be effective. The user has to depenetrate those.

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