Research on the high velocity compaction process of iron-based powder based on the DEM.

In order to further study the dynamic response of granular systems under impact loading, this paper establishes an SHPB test model of metal powder based on the discrete element method (DEM) of particles using PFC3D software. The High Velocity Compaction (HVC) process is simulated by numerical simulation. The distribution and change rules of particle movement are observed from different angles; the change rules of particle normal velocities at different positions in the particle sample are analyzed; the formation process of force chains under impact is observed; and the change rules of contact forces between particles at different positions are analyzed.