https://doi.org/10.1051/epjconf/202124911004
Geometrical network of granular materials under isochoric cyclic shearing
1
Department of Civil Engineering, University of British Columbia, Vancouver, BC, Canada
2
LMGC, CNSR-University of Montpellier, Montpellier, France
* e-mail: yangm15@civil.ubc.ca
** e-mail: mtaiebat@civil.ubc.ca
*** e-mail: patrick.mutabaruka@umontpellier.fr
**** e-mail: franck.radjai@umontpellier.fr
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
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.
