Superimpose subcase results in linear static analysis

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.

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.