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Settlement statistics of a granular layer composed of polyhedral particles

TitleSettlement statistics of a granular layer composed of polyhedral particles
Publication TypeConference Proceedings
Year of Publication2013
AuthorsQuezada JCarlos, Saussine G, Breul P, Radjaï F
EditorYu A, Dong K, Yang R
SponsorAssoc Study Micromechan Granular Media(AEMMG), Univ New S Wales(UNSW) Lab Simulat & Modelling Particulate Syst(SIMPAS), Curtin Univ(CU) Dept Chemical Engn, Univ Twente(UT) Multi Scale Mech Grp(CTW & MESA+), JMBC Res Sch Fluid Mechan, Elsevier, Univ New S Wales(UNSW) Sch Mat Sci & Engn
Conference Name7th International Conference on Micromechanics of Granular Media (Powders and Grains)
VolumeBook Series: AIP Conference Proceedings POWDERS AND GRAINS 2013
Number of Volumes1542
Pagination333-336
Date PublishedJun-18-2013
PublisherAIP
Conference LocationJUL 08-12 2013 Sydney, AUSTRALIA
Abstract

We use 3D contact dynamics simulations to investigate the mechanical equilibrium and settlement of a granular material composed of irregular polyhedral particles confined between two horizontal frictional planes. We show that, as a consequence of mobilized wall-particle friction force at the top and bottom boundaries, the transient deformation induced by a constant vertical load increment is controlled by the aspect ratio (thickness over width) of the packing as well as the stress ratio. The transient deformation declines considerably for increasingly smaller aspect ratios and grows with the stress ratio. From the simulation data for a large number of independent configurations, we find that sample-to-sample fluctuations of the deformation have a broad distribution and they scale with the average deformation.

DOI10.1063/1.4811935
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