Explicit integration of bounding surface model for the analysis of earthquake soil liquefaction

Andrianopoulos, KI; Papadimitriou, AG; Bouckovalas, GD

dc.contributor.author	Andrianopoulos, KI	en
dc.contributor.author	Papadimitriou, AG	en
dc.contributor.author	Bouckovalas, GD	en
dc.date.accessioned	2014-03-01T01:33:28Z
dc.date.available	2014-03-01T01:33:28Z
dc.date.issued	2010	en
dc.identifier.issn	0363-9061	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20439
dc.subject	Automatic substepping	en
dc.subject	Bounding surface	en
dc.subject	Critical state models	en
dc.subject	Explicit integration	en
dc.subject	Liquefaction	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	Automatic substepping	en
dc.subject.other	Bounding surface model	en
dc.subject.other	Bounding surface plasticity	en
dc.subject.other	Bounding surfaces	en
dc.subject.other	Centrifuge model test	en
dc.subject.other	Complex stress	en
dc.subject.other	Computational costs	en
dc.subject.other	Constitutive relations	en
dc.subject.other	Critical state	en
dc.subject.other	Critical state models	en
dc.subject.other	Cyclic loadings	en
dc.subject.other	Elastic region	en
dc.subject.other	Element level	en
dc.subject.other	Error control	en
dc.subject.other	Error map	en
dc.subject.other	Explicit integration	en
dc.subject.other	Explicit scheme	en
dc.subject.other	Finite difference	en
dc.subject.other	Lateral spreading	en
dc.subject.other	Liquefied sand layers	en
dc.subject.other	Lode angle	en
dc.subject.other	Monotonic and cyclic loading	en
dc.subject.other	Monotonic loading	en
dc.subject.other	New model	en
dc.subject.other	Non-linear	en
dc.subject.other	Noncohesive soil	en
dc.subject.other	Parametric analysis	en
dc.subject.other	Plasticity model	en
dc.subject.other	Soil response	en
dc.subject.other	Stress integration	en
dc.subject.other	Centrifugation	en
dc.subject.other	Computer simulation	en
dc.subject.other	Constitutive models	en
dc.subject.other	Critical current density (superconductivity)	en
dc.subject.other	Cyclic loads	en
dc.subject.other	Earthquakes	en
dc.subject.other	Loading	en
dc.subject.other	Plasticity	en
dc.subject.other	Soil liquefaction	en
dc.subject.other	Soil mechanics	en
dc.subject.other	Soils	en
dc.subject.other	Stress analysis	en
dc.subject.other	Geologic models	en
dc.subject.other	centrifugal model test	en
dc.subject.other	cohesive soil	en
dc.subject.other	constitutive equation	en
dc.subject.other	cyclic loading	en
dc.subject.other	finite difference method	en
dc.subject.other	induced seismicity	en
dc.subject.other	liquefaction	en
dc.subject.other	plasticity	en
dc.subject.other	soil dynamics	en
dc.subject.other	soil mechanics	en
dc.title	Explicit integration of bounding surface model for the analysis of earthquake soil liquefaction	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/nag.875	en
heal.identifier.secondary	http://dx.doi.org/10.1002/nag.875	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	This paper presents a new plasticity model developed for the simulation of monotonic and cyclic loading of non-cohesive soils and its implementation to the commercial finite-difference code FLAC, using its User-Defined-Model (UDM) capability. The new model incorporates the framework of Critical State Soil Mechanics, while it relies upon bounding surface plasticity with a vanished elastic region to simulate the non-linear soil response. Stress integration of constitutive relations is performed using a recently proposed explicit scheme with automatic error control and substepping, which so far has been employed in the literature only for constitutive models aiming at monotonic loading. The overall accuracy of this scheme is evaluated at element level by simulating cyclic loading along complex stress paths and by using iso-error maps for paths involving change of the Lode angle. The performance of the new constitutive model and its stress integration scheme in complex boundary value problems involving earthquake-induced liquefaction is evaluated, in terms of accuracy and computational cost, via a number of parametric analyses inspired by the successful simulation of the VELACS centrifuge Model Test No. 2 studying the lateral spreading response of a liquefied sand layer. Copyright (C) 2009 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.875	en
dc.identifier.isi	ISI:000282477700003	en
dc.identifier.volume	34	en
dc.identifier.issue	15	en
dc.identifier.spage	1586	en
dc.identifier.epage	1614	en