Use of elastoplasticity to simulate cyclic sand behavior

Papadimitriou, AG; Bouckovalas, GD; Dafalias, YF

dc.contributor.author	Papadimitriou, AG	en
dc.contributor.author	Bouckovalas, GD	en
dc.contributor.author	Dafalias, YF	en
dc.date.accessioned	2014-03-01T02:48:46Z
dc.date.available	2014-03-01T02:48:46Z
dc.date.issued	1999	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34103
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0033494918&partnerID=40&md5=b392b88102598524e4f7d32850dd4341	en
dc.subject.other	conference proceedings	en
dc.subject.other	cyclic loading	en
dc.subject.other	earthquake engineering	en
dc.subject.other	elastoplasticity	en
dc.subject.other	sand	en
dc.subject.other	soil dynamics	en
dc.title	Use of elastoplasticity to simulate cyclic sand behavior	en
heal.type	conferenceItem	en
heal.publicationDate	1999	en
heal.abstract	The presented elastoplastic model for sands combines a Ramberg-Osgood non-linear hysteretic formulation at small and intermediate cyclic shear strains (< 10-2 %) and a bounding surface plasticity formulation at larger strains. The emphasis is on the explicit use of the State Parameter and on the effect of fabric evolution during monotonic and cyclic loading. Comparison with experiments shows that it is possible to predict quantitatively all basic aspects of cyclic behavior, using the same set of density independent model parameters. Namely: a) the degradation of shear modulus and the concurrent increase of hysteretic damping ratio with cyclic shear strain, b) the rates of plastic shear strain and excess pore pressure accumulation with number of cycles, and c) the resistance to liquefaction.	en
heal.publisher	A.A.Balkema	en
heal.journalName	Earthquake geotechnical engineering. Proceedings of the 2nd international conference on earthquake geotechnical engineering, Lisbon, June 1999. (3 vols.).	en
dc.identifier.spage	125	en
dc.identifier.epage	130	en