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dc.contributor.authorGili Ripoll, José Antonio
dc.contributor.authorAlonso Pérez de Agreda, Eduardo
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica
dc.date.accessioned2008-08-11T12:10:25Z
dc.date.available2008-08-11T12:10:25Z
dc.date.created2001
dc.date.issued2002
dc.identifier.citationGili, J.A.; Alonso, E.E. Microstructural deformation mechanisms of unsaturated granular soils. International Journal for Numerical and Analytical Methods in Geomechanics (2002, vol. 26, no. 5, pp. 433-468).
dc.identifier.issn1096-9853
dc.identifier.urihttp://hdl.handle.net/2117/2217
dc.description.abstractA discrete model for unsaturated granular soils has been developed. Three discrete entities have been defined: particles, water menisci and pores. Local interaction forces and water transfer mechanisms have been integrated into a model through the appropriate equilibrium and balance equations. The results of several numerical tests using this model have been described and discussed. Simulations include wetting and drying under load tests, the application of suction cycles and the effect of a deviatoric stress ratio on wetting-induced collapse. The model reacts just as true granular soil samples behave in laboratory tests. The model provides a new insight into the internal mechanisms leading to large-scale features of behaviour such as wetting-induced collapse or the increase in soil strength provided by suction. The paper also stresses that matric suction changes acting on a granular structure are capable of explaining most of the macroscopic features of stress–strain behaviour.
dc.format.extent36 p.
dc.language.isoeng
dc.publisherWiley
dc.subject.lcshSoil mechanics--Mathematical models
dc.subject.otherunsaturated soils
dc.subject.othergranular soil
dc.subject.othermicromechanics
dc.subject.otherdistinct element method
dc.subject.othernumerical tests
dc.titleMicrostructural deformation mechanisms of unsaturated granular soils
dc.typeArticle
dc.subject.lemacMecànica dels sòls -- Mètodes numèrics
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
local.personalitzacitaciotrue


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