yes, it is very common to have unrealistic stress with imposed displacement.
Try the force method with non-linear instead. Have a measure for the displacement - so you can monitor it while running/solving.
You can stop/kill the analysis when the measure exceeds required displacement. (note which step that happened)
Have user defined steps, space equally, like maybe 41 with full results at each step.
Why stop the analysis - because the full force applied may only be reached by extremely large displacement or even never able to be reached (perfect plasticity more likely to have this than linear hardening depending on slope)
This is what I tend to do unless I have developed an enforced displacement that works correctly without unrealistic stress which like I said is difficult. The difficulty is mainly because solid element faces only have 3 dof. so it is hard to allow realistic rotations without adding other things like rigids, springs, weighted links, etc to allow the correct motion without creating incorrect stress or singularity stresses. Look carefully at your deformed model to see if the enforced displacement is creating unrealistic conditions.
On a related side note it would be nice if CREO had a "stop analysis" condition based on a measure. I have a custom analysis job manager that I can batch analysis to and the manager has a settable job time limit, so a too long analysis does not hold up the rest of the jobs submitted to the manager. An improvement that I could do with some programming, would be to have the job manager monitor the *.res file or *.c01 files for a specific measure value and automatically end the job by some condition on that measure. Unless someone already has a solution, we are stuck manually monitoring the analysis or just hoping it completes successfully in a reasonable time. Yes, you can graph measures while a job is running. Pick a step already finished before changing to the graph function. to update click "edit", then "OK and show"... new points will be added as the analysis progresses. If you get errors first opening the result, try again as it may just be at a bad point in writing files.
