Papers by Keyword: Shock Compaction

Abstract: Shock compaction is an important industrial manufacturing technology for metal powder mixture. In order to analyze the thermodynamic response of W/Cu powder mixture during the shock compaction process, numerical simulation is conducted based on the mesoscale model. The model is generated randomly according to the real morphology distribution statistics regularity. Shock wave is achieved by introduce a rigid wall moving towards the model. Therefore, effects of deformation morphology, temperature distribution and pressure distribution under different shock velocities are presented and discussed. This work could provide a detail understanding of thermodynamic response during shock compaction process in granular-level.

Abstract: A numerical simulation approach is used to study the deformation and temperature distribution of W/Cu powders under shock compaction. A two-dimensional micromechanical model is employed where only a few particles are considered. The simulation is performed using plane strain element and Lagrange formulation. Shock compaction is achieved by bringing in the W/Cu powders an intense compression wave using a high-velocity rigid wall. The effects of compact velocity, particle size and friction on the particle deformation and temperature distribution are discussed based on the results of simulations. The study provides a detailed understanding of the micromechanical behavior of metal powders during shock compaction process.