I am performing a sequential metal forming simulation on a steel ring for which I use model section. In the first forming step I use only 30 degree segment of the ring and define it as a model section. In the second forming step, I want to use the full ring so I import the 30 degree segment model section 12 times, rotate the model sections and glue them together to make a full ring. When I start the simulation, it doesn't converge. Does anybody know if the problem is related to model sections or something might be wrong in my model?
Has your model have strain continuity between any two adjacent sections when glued together .Ensuring this might help.
Thanks Malur. The displacement field is continuous at the interface because the segments are glued together however the stress field is discontinuous. This discontinuous stress field is giving problems. By using the segment-segment (version 2) contact interaction in MARC, the stress field becomes more uniform across the interface (though still discontinuous at some locations). The good thing is that the simulation started to converge now.
Glad to know about the resolution of the convergence problem. Wish you success in your further work.
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