I am trying to perform metal extrusion of a billet through a die. Although I have tried playing around with contact sets, and advanced convergence parameters in the simulation module, the problem always fails and I am unable to generate any valid results for the extruded metal. FYI, I have already tried 2D axisymmetric and 3D modeling, but I am clearly missing something elementary. Please help me with your advice. I am uploading the part and the result files with this question.