Numerical modelling of compaction of complex-shape parts in rigid dies: pressing scheme effect on the density distribution - I: mechanical model of powders densification

摘要

The theory of plasticity #a Porous bodys is formulated with taking into account specificity of powder behavior under pressing. The proposed model of a pressable medium is one-parameter, with functions depending on current denseness. The parameters of the model are defined on the base of an equilibrium denseness, on reaching which the further deformation is not accompanied by volumetric modifications. The techniques for definition of material parameters of the model are described.