The recommended contact parameters for interface Type 5

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

Hello

I am working with contact type 5 for a plain strain problem

Could you please tell me the recommended contact parameters for interface Type 5?

Thank you

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2018

    @pohan

     

    Start without friction and check the convergence,

     

    If you have small initial penetration, use Inacti 3 or 4 and Stfac of 0.8 to start with. 

  • pohan
    pohan Altair Community Member
    edited May 2018

    Hi Prakash

    Thank you for your answer.

  • pohan
    pohan Altair Community Member
    edited September 2018

    Hello.

    Could you please tell me how to determine STFAC for this contact after starting with 0.8?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited September 2018

    @pohan 

     

    Stfac is used to increase the initial interface stiffness and Stfac can be any number. But any number higher than 1 will reduce the timestep.

     

    Keeping that in mind, I usually start with 0.7 or 0.8.

     

     

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