Abstract: The warm compaction process is simulated by the finite element analysis software which is MSC/MARC. The thermal mechanically coupled analysis method is applied based on the updated Lagrangian Method to simulate powder warm compaction process. The powder warm compaction process is simulated, and the influence of friction condition and pressing styles is researched on the density of powder green and the mechanics behavior at certain temperature. The results indicate that for cylindrical powder metallurgic products, with the improvement of friction condition, the uniformity of distribution of green relative density is largely improved, the pressing force and stress all decrease, and the nonconforming pressing processes influence the distribution of green density in some degree. The status of stress distribution of the process that punches firstly press and die finally press is different with other three processes, presents the figure of ‘flume’.

Key words: Density, FEM, property, Three-axial compaction