Finite element method in powdered metal compaction processes

초록

In this paper, finite element method for powdered metal compaction processes is introduced. Basic equations for finite element formulation are summarized. A yield criterion, which is modified for describing asymmetric behavior of powdered metal compacts, is introduced and applied to the classes of powdered metal compaction processes. Three material parameters are involved in the yield function and determined from the behavior of sintered powder compacts as functions of relative density. The simulation includes single-action and double-action pressings of solid cylinders as well as cylindrical rings of relatively long part(class II parts).