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Conference Paper: Effects of inter-particle friction on the critical state behaviour of granular materials: a numerical study

TitleEffects of inter-particle friction on the critical state behaviour of granular materials: a numerical study
Authors
KeywordsGranular materials
DEM
Inter-particle friction
Critical state
Issue Date2013
PublisherInternational Center for Numerical Methods in Engineering (CIMNE).
Citation
The 3rd International Conference on Particle-based Methods (PARTICLES 2013), Stuttgart, Germany, 18-20 September 2013. In Particle-based Methods III: Fundamentals and Applications, 2013, p. 165-175 How to Cite?
AbstractCritical state soil mechanics (CSSM) gives a theoretical framework for soil modelling. This paper investigates the effect of inter-particle friction on the critical state behavior of DEM assemblies with grading representative of a real soil. It is found that the angle of shearing resistance at the critical state increases with increasing inter-particle friction () and in void ratio (e) vs logarithmic mean effective stress (log(p’)) space the critical state locii have higher e values when  is higher. An atypical CSL in e-logp’ space that deviates from experimental observations and the classical CSSM behavior was observed when µ = 0.5. Micro-scale analyses show that this can be attributed to the emergence of a higher number of floating particles due to the increasing self-stability of strong force chains with increasing inter-particle friction. This study recommends the use of inter-particle friction lower than 0.5 in DEM simulations of element testing in soil mechanics.
DescriptionECCOMAS Thematic Conference Series
Technical Session: IS - Instability Mechanisms: From Particles to Structures II (Invited Session)
The Conference program's website is located at http://congress.cimne.com/particles2013/frontal/ProgTodo.asp
Persistent Identifierhttp://hdl.handle.net/10722/190289
ISBN

 

DC FieldValueLanguage
dc.contributor.authorHuang, Xen_US
dc.contributor.authorHanley, Ken_US
dc.contributor.authorO'Sullivan, Cen_US
dc.contributor.authorKwok, CYen_US
dc.contributor.authorTham, LGen_US
dc.date.accessioned2013-09-17T15:17:03Z-
dc.date.available2013-09-17T15:17:03Z-
dc.date.issued2013en_US
dc.identifier.citationThe 3rd International Conference on Particle-based Methods (PARTICLES 2013), Stuttgart, Germany, 18-20 September 2013. In Particle-based Methods III: Fundamentals and Applications, 2013, p. 165-175en_US
dc.identifier.isbn978-84-941531-8-1-
dc.identifier.urihttp://hdl.handle.net/10722/190289-
dc.descriptionECCOMAS Thematic Conference Series-
dc.descriptionTechnical Session: IS - Instability Mechanisms: From Particles to Structures II (Invited Session)-
dc.descriptionThe Conference program's website is located at http://congress.cimne.com/particles2013/frontal/ProgTodo.asp-
dc.description.abstractCritical state soil mechanics (CSSM) gives a theoretical framework for soil modelling. This paper investigates the effect of inter-particle friction on the critical state behavior of DEM assemblies with grading representative of a real soil. It is found that the angle of shearing resistance at the critical state increases with increasing inter-particle friction () and in void ratio (e) vs logarithmic mean effective stress (log(p’)) space the critical state locii have higher e values when  is higher. An atypical CSL in e-logp’ space that deviates from experimental observations and the classical CSSM behavior was observed when µ = 0.5. Micro-scale analyses show that this can be attributed to the emergence of a higher number of floating particles due to the increasing self-stability of strong force chains with increasing inter-particle friction. This study recommends the use of inter-particle friction lower than 0.5 in DEM simulations of element testing in soil mechanics.-
dc.languageengen_US
dc.publisherInternational Center for Numerical Methods in Engineering (CIMNE).-
dc.relation.ispartofParticle-based Methods III: Fundamentals and Applications: Proceedings of the III International Conference on Particle-based Methods ... 2013en_US
dc.rightsAuthor holds the copyright-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectGranular materials-
dc.subjectDEM-
dc.subjectInter-particle friction-
dc.subjectCritical state-
dc.titleEffects of inter-particle friction on the critical state behaviour of granular materials: a numerical studyen_US
dc.typeConference_Paperen_US
dc.identifier.emailKwok, CY: fkwok8@hku.hken_US
dc.identifier.emailTham, LG: hrectlg@hku.hken_US
dc.identifier.authorityKwok, CY=rp01344en_US
dc.description.naturepublished_or_final_version-
dc.identifier.hkuros224125en_US
dc.identifier.spage165-
dc.identifier.epage175-
dc.publisher.placeBarcelona, Spain-

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