Slide Contact Convergence Problem

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

Hello there,

 

I am trying to model the gasket in an engine using MGASK. The contact between gasket and cylinder head should be set to Slide. However only freeze contact works. The slide or stick contacts does not converge. I tried Cntstab, ExpertNL, set NIN to 10, increased convergence criteria. None of them works. any comment on this issue would be appreciated.


Thank you in advance ! 

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2017

    Hi,

     

    What type of analysis are you running?

     

    Slide contact may not work if you are using linear static analysis as type. 

     

    Can you please confirm the analysis type?

  • HyperX
    HyperX Altair Community Member
    edited July 2017

    I am running Non-Linear Quasi static analysis. 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2017

    Hi,

     

    Can you please share the model file?

     

    You can use the dropbox link in my signature below.

  • HyperX
    HyperX Altair Community Member
    edited July 2017

    Prakash Thank you for reply, but unfortunately I cant share the model. I can give you any detail you want. 

     

    Thanks,

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2017

    Hi,

    Can you share the .out file?

     

    What type of load are you applying?

    Paste an image of contact definition. 

    If you think it is a large displacement problem, please use PARAM,LGDISP,1 and check if this helps.

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