8th International Conference on Mehanical and Physical Behaviour of Materials under Dynamic Loading
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 125-131
DOI: 10.1051/jp4:2006134020

Modelling dynamic fragmentation of rocks

S. Grange¹, S. Mencacci² and F. Hild<sup>1

1</sup>  LMT-Cachan, ENS de Cachan$/$CNRS UMR 8535, University of Paris 6, 61 avenue du Président Wilson, 94235 Cachan Cedex, France
²  Nitrochimie, EPC Group, Usine la Dynamite, 13310 St-Martin-de-Crau, France

(Published online 26 July 2006)

Abstract
Dynamic loads such as blasts or ballistic impacts induce different fragmentation zones. A damage law is used to describe the fragmentation coupled with a Drucker-Prager model accounting for confined damage. Two limestones are characterised to simulate edge-on impacts that allow for the identification of the friction angle of the Drucker-Prager model to avoid complex triaxial tests.

© EDP Sciences 2006

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