A Theoretical Investigation for High-Speed Cold Forging of Short Metal Cylinders Between Two Large Elastic Tools

A theoretical solution is obtained for the pressure distribution at the die-material interface during a high-speed cold forging operation of a short metal cylinder workpiece, taking into account the elastic deformation of the tool considered as a half-space. The influence of the combined effects of axial and radial inertia forces, impact velocity, frictional conditions, plastic resistance of material, and radius to height ratio on pressure distribution and die surface deflection, are numerically evaluated. An illustrative example of dynamic compression with a gravity drop hammer is presented.