After running a normal stress analysis, I noticed that the
localstress was very high over 250,000 psi for a 36,000 psi
material. In real life situaion the material would yeild and
distributethe stress. In cosmos that is not the case, so I
triedrefining my mesh in that region, but that didn't seem to help.

My question is how is one to know when the local stress is high andshould be ignored when interpreting the results?

Also can anyone recomend a good basic FEA book or site that talksabout this types of issues.

Thank you

My question is how is one to know when the local stress is high andshould be ignored when interpreting the results?

Also can anyone recomend a good basic FEA book or site that talksabout this types of issues.

Thank you

The stress would vary with geometry and boundary conditions as the mesh is loaded. One thread here talks about applying force loads to multiple faces/edges. Check the reaction loads to ensure they are close to the applied loads.

If reactions and loads tie, try this: produce a plot on screen of the deformation at scale of 1:1. If the deformation is visible to the naked eye, then use the nonlinear static solver in a new study. I guess the deformation is visible since it is so far past yielding. This will better approximate the stress as the geometry changes under static load. This is a time intensive solver so it may be useful to back off on those mesh refinements for the first time.