Coupled Eulerian-Lagrangian Model

Hi everyone;

I'm trying to simulate FSW plunge state using Abaqus/Explicit, Coupled Eulerian-Lagrangian technique.

As you can see in the picture, NT11, PEV and EVF are calculated. But the problem is that the elements in base metal are not deformed. In other words, the base metal elements which are in contact with PIN remained intact and are not deformed.

Anyone could help me with this?