Admissible velocity field and energy dissipation rate for differential speed roll compaction of metal powder: Analysis of differential speed roll compaction of metal powder (1st)

摘要

An admissible velocity field involving arbitrary variables for differential speed roll compaction of metal powder is determined under some basic assumptions. The main assumption is that the plane perpendicular to the rolling direction about thepowder position where densification starts advances toward the exit by gradually changing its inclination. The total energy dissipation rate, which is the sum of the energy due to compaction of powder and to friction at high and low speed roll / powderinterfaces, is calculated using the mechanics of powder compaction and the admissible velocity field proposed.