Luisa Fernanda Orozco (1,4), Jean-Yves Delenne (3), Philippe Sornay (4) and Farhang Radjai (1,2),
(1) Laboratoire de Mécanique et Génie Civil (LMGC), Université de Montpellier, CNRS, Montpellier, France,
(2) UMI 3466 CNRS-MIT, CEE, Massachusetts Institute of Technology (MIT), 77 Massachusetts Avenue, Cambridge CA 02139, USA,
(3) INRA, UMR IATE Montpellier, France,
(4) CEA, DEN, DEC, SFER, LCU, 13108 Saint Paul les Durance, France
We investigate the fracture of a single grain due to impact using three-dimensional Contact Dynamics simulations. The grains are assumed to be perfectly rigid but modeled as an assembly of bonded polyhedral Voronoï cells. The strength of the bonds represents the internal cohesion of the grain. A series of simulations for a range of different values of: number of cells, cohesion, impact velocity, were performed. It was found that the fragmentation efficiency increases with the number of cells, and, it is inversely proportional to the internal cohesion. The impact velocity maximizing the efficiency is found to be 0.08 m/s.
camera iphone 8 plus apk Fragmentation of grains under impact | |
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| Science & Technology | Upload TimePublished on 27 Jun 2017 |
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