Peridynamics simulation of the comminution of particles containing microcraks

Nicolas Blanc (1) , Xavier Frank (1) , Claire Mayer (1) , Farhang Radjai (2, 3) , Jean-Yves Delenne (1)

1 UMR IATE - Ingénierie des Agro-polymères et Technologies Émergentes
2 LMGC - Laboratoire de Mécanique et Génie Civil
3 PMMD - Physique et Mécanique des Milieux Divisés

In this study, we rely on a ’bond-based’ peridynamic approach to investigate the strength and failure of 2D particles containing a collection of 1D microcracks. The mechanical tests were performed on disks under diametral compression. In an extensive parametric study, the distribution of microcracks was varied for different particle sizes. The evolution of yield stress with diameter and the probability of failure in terms of Weibull distributions are investigated in detail. Finally, by means of a floodfill algorithm, we analyze the variation of the mean fragment size as a function of the density of defects.

Keywords: numerical simulation; particle

Keywords: particule; test mécanique; simulation numérique; compression mécanique

Domains: Mechanics of materials [physics.class-ph]

Nicolas Blanc, Xavier Frank, Claire Mayer, Farhang Radjai, Jean-Yves Delenne. Peridynamics simulation of the comminution of particles containing microcraks. International Conference on Micromechanics of Granular Media (Powders & Grains), Jul 2017, Montpellier, France. ⟨10.1051/epjconf/201714007018⟩. ⟨hal-01595386⟩