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1 Departamento de Ingeniería Civil y Ambiental - CeiBA Complex Systems Research Center, Universidad de Los Andes 2 LMGC - Laboratoire de Mécanique et Génie Civil 3 PMMD - Physique et Mécanique des Milieux Divisés LMGC - Laboratoire de Mécanique et Génie Civil

Abstract : This article presents a model of grain fragmentation to be implemented in discrete element methods: the Split-Cell Method SCM. In this method, the particles are of polygonal shape, and they split into polygonal cells once a certain failure criterion, depending on the forces exerted at the contacts, the size and shape of the grain, and the tensile strength of the material, is satisfied. The SCM is an improvement compared to other methods currently available in the literature, given that it does not restrict the shape of the grains or their fragments, mass is conserved throughout the fragmentation events, and it does not introduce artificial length scales in the system. In order to validate the proposed method, an experiment using plaster particles was conducted and its results were compared to those of a numerical simulation of the same system, finding a good match between both the experiment and the simulation.

Keywords : discrete element methods crushing fragmentation simulation

Autor: David Cantor - Nicolas Estrada - Emilien Azéma -

Fuente: https://hal.archives-ouvertes.fr/


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