SANICLAY: A new simple anisotropic clay plasticity model

Papadimitriou, AG; Dafalias, YF; Manzari, MT

dc.contributor.author	Papadimitriou, AG	en
dc.contributor.author	Dafalias, YF	en
dc.contributor.author	Manzari, MT	en
dc.date.accessioned	2014-03-01T02:51:10Z
dc.date.available	2014-03-01T02:51:10Z
dc.date.issued	2007	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35420
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-56249112654&partnerID=40&md5=b044dc3e80b11451be4c26d48bd39e0f	en
dc.subject.other	ABS resins	en
dc.subject.other	Anisotropy	en
dc.subject.other	Clay minerals	en
dc.subject.other	Constitutive models	en
dc.subject.other	Critical current density (superconductivity)	en
dc.subject.other	Elasticity	en
dc.subject.other	Foundations	en
dc.subject.other	Hardening	en
dc.subject.other	Mechanics	en
dc.subject.other	Numerical methods	en
dc.subject.other	Plasticity	en
dc.subject.other	Plastics	en
dc.subject.other	Soil mechanics	en
dc.subject.other	Stresses	en
dc.subject.other	Algebraic expressions	en
dc.subject.other	Anisotropic clays	en
dc.subject.other	Associated flow rules	en
dc.subject.other	Associativity	en
dc.subject.other	Boston Blue clays	en
dc.subject.other	Critical state lines	en
dc.subject.other	Critical state soil mechanics	en
dc.subject.other	Effective stresses	en
dc.subject.other	Isotropic hardenings	en
dc.subject.other	Laboratory tests	en
dc.subject.other	Model formulations	en
dc.subject.other	Modified cam clay models	en
dc.subject.other	New models	en
dc.subject.other	Normally consolidated	en
dc.subject.other	Overconsolidated clays	en
dc.subject.other	Plastic potentials	en
dc.subject.other	Plasticity models	en
dc.subject.other	Rotational hardenings	en
dc.subject.other	Satisfactory degrees	en
dc.subject.other	Sensitive clays	en
dc.subject.other	Triaxial stresses	en
dc.subject.other	Undrained	en
dc.subject.other	Void ratios	en
dc.subject.other	Yield surfaces	en
dc.subject.other	Geologic models	en
dc.title	SANICLAY: A new simple anisotropic clay plasticity model	en
heal.type	conferenceItem	en
heal.publicationDate	2007	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 incorporates a Critical State Line in the void ratio - mean effective stress space, which is a function of anisotropy. To facilitate the discussion, the model formulation is presented in the triaxial stress space. The SANICLAY is shown to provide successful simulation of the rate-independent behavior of normally consolidated sensitive clays, and to a satisfactory degree of accuracy of overconsolidated clays. The new model requires merely three more constants than those of the modified Cam clay model, all of which are easily calibrated from well established laboratory tests (two of them by explicit algebraic expressions) following a procedure presented on the basis of data for the Boston Blue clay. © 2007 Taylor & Francis Group.	en
heal.journalName	Proceedings of the 10th International Symposium on Numerical Models in Geomechanics NUMOG 10 - Numerical Models in Geomechanics NUMOG 10	en
dc.identifier.spage	79	en
dc.identifier.epage	84	en