I am doing explicit dynamic analysis of flow forming process which comprises of reducing hollow tube/solid cylinders outer diameter using one or more rigid rollers. In that I have fixed bottom nodes of the cylinder and roller is given feed and rotational velocity around the cylinder so that the roller travels a helical path around the workpiece.
I am getting excessive deformation of the workpiece. How to avoid that? Which is the best contact interaction to be used in this type of simulation?
I am attaching my input file for the reference.