Role of anisotropy in the elastoplastic response of a polygonal packing

Alonso-Marroquin, F; Luding, S; Herrmann, HJ; Vardoulakis, I

dc.contributor.author	Alonso-Marroquin, F	en
dc.contributor.author	Luding, S	en
dc.contributor.author	Herrmann, HJ	en
dc.contributor.author	Vardoulakis, I	en
dc.date.accessioned	2014-03-01T01:23:02Z
dc.date.available	2014-03-01T01:23:02Z
dc.date.issued	2005	en
dc.identifier.issn	1539-3755	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16777
dc.subject.classification	Physics, Fluids & Plasmas	en
dc.subject.classification	Physics, Mathematical	en
dc.subject.other	Fabric coefficients	en
dc.subject.other	Poisson ratios	en
dc.subject.other	Polygonal packing	en
dc.subject.other	Soil plasticity	en
dc.subject.other	Anisotropy	en
dc.subject.other	Elastic moduli	en
dc.subject.other	Granular materials	en
dc.subject.other	Packing	en
dc.subject.other	Elastoplasticity	en
dc.title	Role of anisotropy in the elastoplastic response of a polygonal packing	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevE.71.051304	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevE.71.051304	en
heal.identifier.secondary	051304	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	We study the effect of the anisotropy induced by loading on the elastoplastic response of a two dimensional discrete element model granular material. The anisotropy of the contact network leads to a breakdown of the linear isotropic elasticity. We report on a linear dependence of the Young moduli and Poisson ratios on the fabric coefficients, measuring the anisotropy of the contact network. The resulting nonassociated plastic flow rule and the linear relationship between dilatancy and stress ratio are discussed in terms of several existing models. We propose a paradigm for understanding soil plasticity, based on the correlation between the plastic flow rule and the induced anisotropy on the subnetwork of sliding contacts. © 2005 The American Physical Society.	en
heal.publisher	AMERICAN PHYSICAL SOC	en
heal.journalName	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics	en
dc.identifier.doi	10.1103/PhysRevE.71.051304	en
dc.identifier.isi	ISI:000231687700017	en
dc.identifier.volume	71	en
dc.identifier.issue	5	en