Simulation of Powder Wire Drawing

Abstract

The powder wire drawing process is simulated using the finite element method. To describe the powder core behavior, a plasticity model of porous and granulated media with planar defects is proposed. The model takes into account the multimodulus behavior during compression and tension and the tendency to dilatancy. Core densification during powder wire drawing after one and six passes is studied. Significant crosscut inhomogeneity in density distribution of the powder core is found. The relationship between the powder core densification and the initial porosity and fraction of planar effects is established.