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Superimpose subcase results in linear static analysis

User: "Altair Forum User"
Altair Employee
Updated by Altair Forum User

Hello,

 

I am trying to run a linear static analysis which has 36 loadsteps. I need to apply these loadsteps in sequence and need the results from the previous step to be retained for the next step. I am trying to use the statsub(preload) card but it gives an error that subcases cannot be nested. What is the right way to do this in a linear static analysis.

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    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    Hi Swapnil,

     

    Have you tried CNTNLSUB?

     

    The CNTNLSUB is used to continue a nonlinear solution from a preceding nonlinear subcase, and thus create complex loading sequences.

     

    Please note that this works with non-linear solutions. So you can start with NLSTAT instead of linear static. 

     

    I would also suggest you to go through CNTNLSUB comments section on OptiSrtuct help for more information about the same.