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dc.contributor.authorCiantia, Matteo Oryem
dc.contributor.authorArroyo Alvarez de Toledo, Marcos
dc.contributor.authorO'Sullivan, Catherine
dc.contributor.authorGens Solé, Antonio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2019-11-06T07:42:18Z
dc.date.available2019-11-06T07:42:18Z
dc.date.issued2019-10
dc.identifier.citationCiantia, M. [et al.]. Micromechanical inspection of incremental behaviour of crushable soils. "Acta Geotechnica", Octubre 2019, vol. 14, núm. 5, p. 1337-1356.
dc.identifier.issn1861-1125
dc.identifier.otherhttps://www.researchgate.net/publication/332918292_Micromechanical_inspection_of_incremental_behaviour_of_crushable_soils
dc.identifier.urihttp://hdl.handle.net/2117/171800
dc.description.abstractIn granular soils grain crushing reduces dilatancy and stress obliquity enhances crushability. These are well-supported specimen-scale experimental observations. In principle, those observations should reflect some peculiar micromechanism associated with crushing, but which is it? To answer that question the nature of crushing-induced particle-scale interactions is here investigated using an efficient DEM model of crushable soil. Microstructural measures such as the mechanical coordination number and fabric are examined while performing systematic stress probing on the triaxial plane. Numerical techniques such as parallel and the newly introduced sequential probing enable clear separation of the micromechanical mechanisms associated with crushing. Particle crushing is shown to reduce fabric anisotropy during incremental loading and to slow fabric change during continuous shearing. On the other hand, increased fabric anisotropy does take more particles closer to breakage. Shear-enhanced breakage appears then to be a natural consequence of shear-enhanced fabric anisotropy. The particle crushing model employed here makes crushing dependent only on particle and contact properties, without any pre-established influence of particle connectivity. That influence does not emerge, and it is shown how particle connectivity, per se, is not a good indicator of crushing likelihood.
dc.format.extent20 p.
dc.language.isoeng
dc.publisherSpringer
dc.rightsAttribution 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
dc.subject.lcshGranular materials--Mathematical models
dc.subject.otherCrushing
dc.subject.otherDistinct element method
dc.subject.otherGranular materials
dc.subject.otherIncremental non linearity
dc.subject.otherMicro-mechanisms
dc.subject.otherResponse envelope
dc.titleMicromechanical inspection of incremental behaviour of crushable soils
dc.typeArticle
dc.subject.lemacMaterials granulars -- Propietats mecàniques -- Models matemàtics
dc.contributor.groupUniversitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
dc.identifier.doi10.1007/s11440-019-00802-0
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://link.springer.com/article/10.1007/s11440-019-00802-0
dc.rights.accessOpen Access
local.identifier.drac25158103
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020/645665/EU/Geohazards: Risk Assessment, Mitigation and Prevention/GEO-RAMP
dc.relation.projectidinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/BIA2017-84752-R/ES/INESTABILIDAD HIDROMECANICA EN SUELOS: DETECCION Y EVALUACION/
local.citation.authorCiantia, M.; Arroyo, M.; O'Sullivan, C.; Gens, A.
local.citation.publicationNameActa Geotechnica
local.citation.volume14
local.citation.number5
local.citation.startingPage1337
local.citation.endingPage1356


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