Non Linear Analysis Problem

[engltayl]

We are having problems with running a non linear problem on Ansys. We have created a model in workbench and saved an input file. This is then imported into Ansys classic. Using 2 separate machines, on one machine the analysis runs right through to the last time step and converges. On the other machine the analysis fails part way through due to un-convergence. Is there any settings that might be set differently on the 2 machines.

thanks

 

[Jordonlaw]

Is the operating system the same on both machines ? Is it the same version of Ansys on both machines ?

I recently got a benchmark done of another FEA solver across a multi-processor platform I am thinking of purchasing. The same job ran on 1,2 and 4 processors OK but failed due to convergence problems when run on 3-processors. Not even the experts from the solver company knows why it has this anomoly.................

 

[engltayl]

Yes same operating system and same version of ansys.

 

[cbrn]

Hi,
did you check that default convergence criteria are the exact same on the two environments?
Try eliminating the "/SOLU" part in the Workbench-to-Classical input file, and set up solution options directly in Classical. This might make some difference...
If you continue having troubles, please provide more info about the misconvergence messages: what is not converging? Force? Displacement? inside an equilibrium iteration or inside a timestep?

Regards