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Advances in Acoustics and Vibration
Volume 2011, Article ID 123695, 9 pages
http://dx.doi.org/10.1155/2011/123695
Research Article

Discrete Element Simulation of Elastoplastic Shock Wave Propagation in Spherical Particles

Marcus Wallenberg Laboratory for Sound and Vibration Research (MWL), Royal Institute of Technology (KTH), 100 44 Stockholm, Sweden

Received 18 October 2010; Accepted 15 June 2011

Academic Editor: Mohammad Tawfik

Copyright © 2011 M. Shoaib and L. Kari. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Elastoplastic shock wave propagation in a one-dimensional assembly of spherical metal particles is presented by extending well-established quasistatic compaction models. The compaction process is modeled by a discrete element method while using elastic and plastic loading, elastic unloading, and adhesion at contacts with typical dynamic loading parameters. Of particular interest is to study the development of the elastoplastic shock wave, its propagation, and reflection during entire loading process. Simulation results yield information on contact behavior, velocity, and deformation of particles during dynamic loading. Effects of shock wave propagation on loading parameters are also discussed. The elastoplastic shock propagation in granular material has many practical applications including the high-velocity compaction of particulate material.