Dynamic simulation of powder compact by random packing of monosized and polydisperse particles

The isostatic compacting of powders of monosized or polydispersed spherical particles is simulated using the discrete element method (DEM). The simulation begins with the random generation of spherical particles in a 3D spherical space, and no contact between the generated particles is allowed initially, then a centripetal force field is introduced to each of the particles. As a consequence of compacting, particles move toward the space center, and during this densifying process, they would colloid/interact with each other, the kinetic energy is dissipated due to the friction and viscous damping. The dynamic packing process proceeds until all particle reach their stable position with an essentially zero velocity.