EPJ Web Conf.
Volume 249, 2021Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media
|Number of page(s)||4|
|Published online||07 June 2021|
Geometrical network of granular materials under isochoric cyclic shearing
Department of Civil Engineering, University of British Columbia, Vancouver, BC, Canada
2 LMGC, CNSR-University of Montpellier, Montpellier, France
Published online: 7 June 2021
We use three-dimensional particle dynamics simulations to investigate the microstructure evolution of granular material subjected to isochoric cyclic shearing, driving the system to a liquefaction state. The cyclically sheared assembly presents a realistic macroscopic response as observed in physical experiments. By analyzing the contact network evolution in the post-liquefaction period, we show that the onset of liquefaction state is characterized by a sudden drop of coordination number and a fragile particle connectivity network. The simulation suggests a critical coordination number for exiting the liquefaction state. Evolution of fabric anisotropy combined with coordination number implies the isotropic and anisotropic gain or loss of contacts at certain durations of a post-liquefaction loading cycle.
A video is available at https://doi.org/10.48448/3eg7-yr37
© The Authors, published by EDP Sciences, 2021
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