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. Hild11 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