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Is there any limitation for LSDYNA3D to be applied to Metal-Forming analysis?

Yes, there are some certain conditions under which the prediction will not be as satisfactory as the others. Specifically, we have the following conditions:

1. When there is very high pressure between the interfaces, such as in the process with ironing. There is a plane stress assumption for the shell element, if the normal stress is too high, this assumption will be broken. In this case, maybe solid element should be used if the CPU costs are affordable.

2. When the dynamic effect is big, such as in crash forming simulation. In this case, less mass scaling and low punch velocity should be used.