SANICLAY: Simple anisotropic clay plasticity model

Dafalias, YF; Manzari, MT; Papadimitriou, AG

dc.contributor.author	Dafalias, YF	en
dc.contributor.author	Manzari, MT	en
dc.contributor.author	Papadimitriou, AG	en
dc.date.accessioned	2014-03-01T01:25:06Z
dc.date.available	2014-03-01T01:25:06Z
dc.date.issued	2006	en
dc.identifier.issn	0363-9061	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17544
dc.subject	Anisotropy	en
dc.subject	Clays	en
dc.subject	Constitutive relations	en
dc.subject	Plasticity	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Mechanics	en
dc.subject.other	Anisotropy	en
dc.subject.other	Clay	en
dc.subject.other	Computer simulation	en
dc.subject.other	Consolidation	en
dc.subject.other	Mathematical models	en
dc.subject.other	Plasticity	en
dc.subject.other	Anisotropic plasticity clay model	en
dc.subject.other	Constitutive relations	en
dc.subject.other	Stress space	en
dc.subject.other	Undrained compression	en
dc.subject.other	Soil mechanics	en
dc.subject.other	Anisotropy	en
dc.subject.other	Clay	en
dc.subject.other	Computer simulation	en
dc.subject.other	Consolidation	en
dc.subject.other	Mathematical models	en
dc.subject.other	Plasticity	en
dc.subject.other	Soil mechanics	en
dc.subject.other	anisotropy	en
dc.subject.other	clay soil	en
dc.subject.other	compression	en
dc.subject.other	consolidation	en
dc.subject.other	laboratory method	en
dc.subject.other	numerical method	en
dc.subject.other	plasticity	en
dc.subject.other	simulation	en
dc.subject.other	soil mechanics	en
dc.title	SANICLAY: Simple anisotropic clay plasticity model	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/nag.524	en
heal.identifier.secondary	http://dx.doi.org/10.1002/nag.524	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	SANICLAY is a new simple anisotropic clay plasticity model that builds on a modification of an earlier model with an associated flow rule, in order to include simulations of softening response under undrained compression following Ko consolidation. Non-associativity is introduced by adopting a yield surface different than the plastic potential surface. Besides, the isotropic hardening of the yield surface both surfaces evolve according to a combined distortional and rotational hardening rule, simulating the evolving anisotropy. Although built on the general premises of critical state soil mechanics, the model induces a critical state line in the void ratio-mean effective stress space, which is a function of anisotropy. To ease interpretation, the model formulation is presented firstly in the triaxial stress space and subsequently, its multiaxial generalization is developed systematically, in a form appropriate for implementation in numerical codes. The SANICLAY is shown to provide successful simulation of both undrained and drained rate-independent behaviour of normally consolidated sensitive clays, and to a satisfactory degree of accuracy of overconsolidated clays. The new model requires merely three constants more than those of the modified Cam clay model, all of which are easily calibrated from well-established laboratory tests following a meticulously presented procedure. Copyright © 2006 John Wiley & Sons, Ltd.	en
heal.publisher	JOHN WILEY & SONS LTD	en
heal.journalName	International Journal for Numerical and Analytical Methods in Geomechanics	en
dc.identifier.doi	10.1002/nag.524	en
dc.identifier.isi	ISI:000241051400004	en
dc.identifier.volume	30	en
dc.identifier.issue	12	en
dc.identifier.spage	1231	en
dc.identifier.epage	1257	en