Contact Reference Stiffness

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

Hello,

 

what does this error message means?

 

 *** WARNING # 4961
 Reference stiffness underlying contact 1 is 9.860277e-11 times
 the average diagonal stiffness of the global model.

 

I have TIE, SMALL friction and FINITE friction surface-to-surface contacts in my model. For all of them this error message appears after changing geometry and mesh. In the same model with a slight other geometry and before remeshing, these errors didn't appear. All i did was reassign the contact surfaces to the new mesh.

Defining the contacts totaly new didn't helped.

 

Tank you very much for your help!

With kind regards

Tim Winkler

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Answers

  • FaroukM
    FaroukM Altair Community Member
    edited June 2020
    Altair Forum User said:

    Hello,

     

    what does this error message means?

     

     *** WARNING # 4961
     Reference stiffness underlying contact 1 is 9.860277e-11 times
     the average diagonal stiffness of the global model.

     

    I have TIE, SMALL friction and FINITE friction surface-to-surface contacts in my model. For all of them this error message appears after changing geometry and mesh. In the same model with a slight other geometry and before remeshing, these errors didn't appear. All i did was reassign the contact surfaces to the new mesh.

    Defining the contacts totaly new didn't helped.

     

    Tank you very much for your help!

    With kind regards

    Tim Winkler

    Hi Tim,

     

    Can You please share your fem model ?

     

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