ERROR

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

THE error is increasing what to do ?

 

NC=    9000 T= 8.4895E-01 DT= 9.4325E-05 ERR= -5.6% DM/M= 0.0000E+00 

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2017

    Hi Pavan,

    This is the energy error parameter, which is shown in percentage. The energy error percentage is the parameter that checks the energy conservation during each numerical cycle . If the energy error is negative it means that some energy has been dissipated.Normally the energy error should be less than 15% at the end of computation but if the model undergoes high plastic deformation the energy error can increase. As of now the energy error looks fine in your model and I recommend you to continue the run.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2017

    Hello Sir,

    The value of error is reached uptp 99.9%. Would it affect the results?

    NC= 1274000 T= 1.2740E+00 DT= 9.9999E-07 ERR=-99.9% DM/M= 3.8006E+01

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2017

    Hi Pavan,

    Please check the model for any penetrations/intersections in the contact.

    Moreover the mass error (dm/m) also seems to be high and it is always recommended to be less than .03.

  • AJM
    AJM Altair Community Member
    edited December 2018

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