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The European Physical Journal B
ISSN: 1434-6028 (printed version)
ISSN: 1434-6036 (electronic version)
Abstract Volume 5 Issue 3 (1998) pp 551-554
Fragmentation of grains in a two-dimensional packing
J.A. Åström (1) (a), H.J. Herrmann (1)(2)
(1) Laboratoire de Physique Mécanique des Milieux Hétérogènes, École Superieure de Physique et Chimie Industrielles, 10 rue Vauquelin, 75231 Paris, Cedex 05, France
(2) ICA1, University of Stuttgart, Pfaffenwaldring 27, 70569 Stuttgart, Germany
Received: 14 December 1997 / Accepted: 17 March 1998
Abstract: A numerical model of fragmentation of a two-dimensional granular medium under pressure is investigated. The fragmentation process is found to be strongly dependent on the type of force used as the criterion for breaking the grains. The fragmentation mode affects the process less dramatically. There is a power-law divergence in the pressure when the medium approaches the full packing limit, $(\epsilon_c-\epsilon)^{-2.0}$. Both log-normal and power-law fragment-size distributions are found. Gravity is demonstrated to be an important factor.
PACS. 83.70.Fn Granular solids - 46.30.Nz Fracture mechanics, fatigue, and cracks - 02.70.Ns Molecular dynamics and particle methods
(a) email: astrom@cypress.csc.fi
Article in PDF format (589 KB)
Online publication: October 26, 1998
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