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Conference Paper: Effects of inter-particle friction on the critical state behaviour of granular materials: a numerical study
Title | Effects of inter-particle friction on the critical state behaviour of granular materials: a numerical study |
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Authors | |
Keywords | Granular materials DEM Inter-particle friction Critical state |
Issue Date | 2013 |
Publisher | International 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? |
Abstract | Critical 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. |
Description | ECCOMAS 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 Identifier | http://hdl.handle.net/10722/190289 |
ISBN |
DC Field | Value | Language |
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dc.contributor.author | Huang, X | en_US |
dc.contributor.author | Hanley, K | en_US |
dc.contributor.author | O'Sullivan, C | en_US |
dc.contributor.author | Kwok, CY | en_US |
dc.contributor.author | Tham, LG | en_US |
dc.date.accessioned | 2013-09-17T15:17:03Z | - |
dc.date.available | 2013-09-17T15:17:03Z | - |
dc.date.issued | 2013 | en_US |
dc.identifier.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 | en_US |
dc.identifier.isbn | 978-84-941531-8-1 | - |
dc.identifier.uri | http://hdl.handle.net/10722/190289 | - |
dc.description | ECCOMAS Thematic Conference Series | - |
dc.description | Technical Session: IS - Instability Mechanisms: From Particles to Structures II (Invited Session) | - |
dc.description | The Conference program's website is located at http://congress.cimne.com/particles2013/frontal/ProgTodo.asp | - |
dc.description.abstract | Critical 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.language | eng | en_US |
dc.publisher | International Center for Numerical Methods in Engineering (CIMNE). | - |
dc.relation.ispartof | Particle-based Methods III: Fundamentals and Applications: Proceedings of the III International Conference on Particle-based Methods ... 2013 | en_US |
dc.rights | Author holds the copyright | - |
dc.subject | Granular materials | - |
dc.subject | DEM | - |
dc.subject | Inter-particle friction | - |
dc.subject | Critical state | - |
dc.title | Effects of inter-particle friction on the critical state behaviour of granular materials: a numerical study | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Kwok, CY: fkwok8@hku.hk | en_US |
dc.identifier.email | Tham, LG: hrectlg@hku.hk | en_US |
dc.identifier.authority | Kwok, CY=rp01344 | en_US |
dc.description.nature | published_or_final_version | - |
dc.identifier.hkuros | 224125 | en_US |
dc.identifier.spage | 165 | - |
dc.identifier.epage | 175 | - |
dc.publisher.place | Barcelona, Spain | - |