Interfacial Shearing Behavior Analysis of Rockfill Using FDEM Simulation with Irregularly Shaped Particles
Publication: International Journal of Geomechanics
Volume 20, Issue 3
Abstract
A set of numerical experiments of simple shear tests of rockfill–structure interfaces were performed using the combined finite- and discrete-element method (FDEM). Each particle was modeled as a polyhedron to represent irregularly shaped rock grains, such as gravel and rockfills. The interfacial shear behavior was analyzed from the perspective of macroscopic mechanical responses and the evolution of contact networks and fabric structures. The macroscopic responses of the interfacial shearing of the rockfill–structure interfaces were typical of those observed in laboratory tests. A shear banding process was observed adjacent to the structure surface. The microscopic observations provided comprehensive information about the shear-induced phenomena in rockfill–structure interfaces.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request, including the models, code, and data of the numerical simulations.
Acknowledgments
This work was supported by the National Natural Science Foundation of China (Grant Nos. 51825905, U1865204, and 51779194), the National Key R&D Program of China (Grant No. 2017YFC0404801), and the Major Special Project of Guizhou Science Cooperation (No. [2017]3005-2). The numerical simulations in this work were performed on the supercomputing system at the Supercomputing Center of Wuhan University.
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International Journal of Geomechanics
Volume 20 • Issue 3 • March 2020
Copyright
©2019 American Society of Civil Engineers.
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Received: Jan 3, 2019
Accepted: Jul 26, 2019
Published online: Dec 24, 2019
Published in print: Mar 1, 2020
Discussion open until: May 24, 2020
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