Externally driven granular systems

A system of granular material resting in a bin is driven by creating voids in the bulk of the medium. Modeling the grains by a collection of mono-disp erse discs, we simulate the two dimensional version of the system. Using a 'pseudo dynamics' to study the dynamics of the system, we observe that the system reaches a steady state in long times. We study different properties of the steady state. (C) 1999 Elsevier Science B.V. All rights reserved.