Effect of yield surface shape on the simulated elasto-plastic response of cohesive soils

Papadimitriou, AG; Vranna, AD; Dafalias, YF; Manzari, MT

dc.contributor.author	Papadimitriou, AG	en
dc.contributor.author	Vranna, AD	en
dc.contributor.author	Dafalias, YF	en
dc.contributor.author	Manzari, MT	en
dc.date.accessioned	2014-03-01T02:52:40Z
dc.date.available	2014-03-01T02:52:40Z
dc.date.issued	2010	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35979
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-84860252749&partnerID=40&md5=0eed4e98c80488b7f198b69ddcd87a56	en
dc.subject.other	Cohesive soils	en
dc.subject.other	Critical state	en
dc.subject.other	Elasto-plastic	en
dc.subject.other	Elasto-plastic response	en
dc.subject.other	Model constants	en
dc.subject.other	Undrained	en
dc.subject.other	Yield surface	en
dc.subject.other	Critical current density (superconductivity)	en
dc.subject.other	Elastoplasticity	en
dc.subject.other	Geotechnical engineering	en
dc.subject.other	Numerical methods	en
dc.subject.other	Computer simulation	en
dc.title	Effect of yield surface shape on the simulated elasto-plastic response of cohesive soils	en
heal.type	conferenceItem	en
heal.publicationDate	2010	en
heal.abstract	This paper presents a discussion on the effect of the selected yield surface shape on the simulated drained and undrained response of cohesive soils. The discussion is made possible by sequentially implementing two different yield surface shapes to a recently proposed elastoplastic critical state (reference) model, SANICLAY, as alternatives to its own yield surface. The reference yield surface shape of SANICLAY is a distorted and rotated ellipse, and the two studied alternatives have the shape of a distorted lemniscate and a distorted ellipsoid. For each constitutive model variant, the remaining equations of SANICLAY were retained unaltered. It is shown, that the use of the distorted lemniscate may lead to selectively more accurate simulations in comparison to the reference, but to a less accurate overall response with the same number of model constants. On the contrary, the use of the distorted ellipsoid provides an overall slightly enhanced simulative ability, but this at the cost of one extra model constant. © 2010 Taylor & Francis Group, London.	en
heal.journalName	Numerical Methods in Geotechnical Engineering - Proceedings of the 7th European Conference on Numerical Methods in Geotechnical Engineering	en
dc.identifier.spage	63	en
dc.identifier.epage	68	en