Asymmetry of stress in granular media

Bardet, JP; Vardoulakis, I

dc.contributor.author	Bardet, JP	en
dc.contributor.author	Vardoulakis, I	en
dc.date.accessioned	2014-03-01T01:16:10Z
dc.date.available	2014-03-01T01:16:10Z
dc.date.issued	2001	en
dc.identifier.issn	0020-7683	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13962
dc.subject	granular mechanics	en
dc.subject	couple stress	en
dc.subject	stress asymmetry	en
dc.subject	discrete particles	en
dc.subject	virtual work	en
dc.subject.classification	Mechanics	en
dc.subject.other	Fracture mechanics	en
dc.subject.other	Granular materials	en
dc.subject.other	Shear stress	en
dc.subject.other	Discrete particles	en
dc.subject.other	Stress asymmetry	en
dc.subject.other	Stress analysis	en
dc.title	Asymmetry of stress in granular media	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0020-7683(00)00021-4	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0020-7683(00)00021-4	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	Here, we show that the average stress in granular media, which is defined from virtual work, may be asymmetric in the absence of contact moments. We specify the circumstances and amplitude of stress asymmetry, and calculate the corresponding couple stress and first stress moment. We also show that the average stress is always symmetric, when it is alternately defined by using statics and no contact moment. The stress asymmetry, which results from external moments, has an amplitude that decreases with the volume size. The present analysis applies to two- and three-dimensional particles of arbitrary shapes. The asymmetric stress, couple stress and first stress moment are analytically calculated in a particular example with cylindrical and spherical particles. (C) 2000 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	Elsevier Science Ltd, Exeter, United Kingdom	en
heal.journalName	International Journal of Solids and Structures	en
dc.identifier.doi	10.1016/S0020-7683(00)00021-4	en
dc.identifier.isi	ISI:000165065200009	en
dc.identifier.volume	38	en
dc.identifier.issue	2	en
dc.identifier.spage	353	en
dc.identifier.epage	367	en