Error in run

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

Hi all,

I had given run in optistruct for linear static analysis 
but it shows like this - 

*** WARNING # ###
In static load case 1 the compliance is negative or large 1.389270E+08. Optimization/buckling analysis cannot be performed due to possible rigid body mode.


what does this mean????
what is compliance???

Please guide me.
 

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2015
    Altair Forum User said:

    Hi all,

    I had given run in optistruct for linear static analysis 

    but it shows like this - 

    *** WARNING # ###

    In static load case 1 the compliance is negative or large 1.389270E+08. Optimization/buckling analysis cannot be performed due to possible rigid body mode.

    what does this mean????

    what is compliance???

    Please guide me.

     

     

    In general, 'rigid body mode' occurs when your BC is not completed. Check your BC!

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2015

    Hi VIj,

     

    As Q.NGUYEN-DAI please check your constraints and loads. In addition please check for unit consistency.

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