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Stress-dilatancy behavior for sand under loading and unloading conditions

TitleStress-dilatancy behavior for sand under loading and unloading conditions
Publication TypeJournal Article
Year of Publication2013
AuthorsYin Z-Y, Chang CS
JournalInternational Journal for Numerical and Analytical Methods in Geomechanics
Volume37
Issue8
Start Page855
Pagination855–870
Date Published05/2013
Keywordsanisotropy, dilatancy, Micromechanics, plasticity, sand, unloading
Abstract

Experimental results have shown very different stress–dilatancy behavior for sand under loading and unloading conditions. Experimental results have also shown significant effects of inherent anisotropy. In this article, a micromechanics-based method is presented, by which the stress–dilatancy relation is obtained through the consideration of slips at the interparticle contacts in all orientations. The method also accounts for the effect of inherent anisotropy in sand. Experimental results on Toyoura sand and Hostun sand are used for illustration of the proposed method.

DOI10.1002/nag.1125