How does the LMTGAP gap limit value is calculated for contact stabilization?

Arun_idhunaal
Arun_idhunaal Altair Community Member
in Community Q&A

In guide page it shows that the value is based on the characteristic length of the contact interface. But how exactly it works?

#CNTSTB #LMTGAP #OPTISTRUCT #CONTACT #STABILIZATION

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Answers

  • Marina_Lima
    Marina_Lima
    Altair Employee

    Hi,
    The LMTGAP value is calculated automatically on OptiStruct, based on the characteristic length of the elements in the contact surface, if you want to know what this value is this, you can check at the output file. The characteristic length is given for each contact ID:

    image.png

    If you want to define a value different from that, you can set the LMTGAP.

    Best regards,
    Marina Lima

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