Tmax for Puck failure model

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

Hello

I am using Puck failure mode for solids elements but I don't know how to choose Tmax - Dynamic time relaxation.

I found in the help that  

 Normal value of Tmax is 10 times higher than the actual times step should be set in the card directly

But the time step is not constant in Radioss.

Could you please help me show me how to do?

Thanks

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Answers

  • Simon Križnik
    Simon Križnik Altair Community Member
    edited December 2019

    Hi,

     

    the time step should not vary significantly during the run and could be a sign of some modeling error.  Use timestep control CST mass scaling or AdvancedMassScaling to impose a constant time step. Or use the smallest timestep from the moment when the failure is expected.

  • pohan
    pohan Altair Community Member
    edited December 2019

    Hi.

    Then I think we should run the model without failure mode first to dectect the moment when the failure is expected!

     

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