remove the contact..just kidding.
you can throw hardware at it to see if it can solve faster.
you could change the solver. but generally direct sparse is best.
you could try changing the contact type (surf to surf instead of node to surf).
you could make the mesh coarser. but you'll have to be careful about the results.
beyond that, your only real option is simplifying the problem so that it solves in a time that is reasonable or remove the contact all together.
in the end, i always recommend in our mentoring that customers do what they can to get close to the answer using a simplified approach and then finalize with all the details included. and when you do have to include it, use it sparingly and only where needed. ie split faces that won't come in contact.
even if you changed fea tools, if you have a lot of contact, it comes at a large cost.
Then, how do I eliminate the error # of sub surface > 1000 with fine mesh analysis?
i'm not sure what your question is
but if you're asking how to reduce the number of contact points, use split lines to make bigger surfaces into smaller ones
I got the message while I was running no pen contact static study with fine mesh.
solver problem:"Number of target sub-surfaces per element > 1000
Even if I changed mesh and finite adjustment of min mesh size. it did not help to remove the error.
Now I have simplified my model a lot and going through adding a part each time, I see that the analysis has hard time to find convergeing solution. I have added hardware as your recommended. What else, Can I do?
sounds like a model specific issue, i'd post it here or get some help from your var