https://doi.org/10.1051/epjconf/202124910004
Mesoscale inertial transition in granular materials
1
INRAE, Aix Marseille Univ., RECOVER, 3275 Rte Cézanne, CS 40061, 13182 Aix en Provence Cedex5, France
2
INRAE, Grenoble Alpes Univ., ETNA, 2 Rue de la Papeterie BP76, 38402 Saint Martin d’Hères, France
Published online: 7 June 2021
Granular assemblies can experience complex failure patterns along a given loading path, with a distribution of ephemeral inertial events marked by local outbursts in kinetic energy. However, investigating such mechanisms appears to be necessary to understand how a certain failure mode develops in a granular material. Using a discrete element method, this study highlights several microstructure reorganizations before the specimen reaches a proper failure state. Meso structures have proven to be efficient to understand the elementary mechanisms responsible for these outbursts in kinetic energy. Strain–like and stress-like quantities are thus defined at a mesoscale and they are used to characterize the nucleation and propagation of these local microstructural events.
A video is available at https://doi.org/10.48448/sfj6-z397
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
