Interactive Role of Rolling Friction and Cohesion on the Angle of Repose through a Microscale Assessment

Doan, T; Indraratna, B; Nguyen, TT; Rujikiatkamjorn, C

Interactive Role of Rolling Friction and Cohesion on the Angle of Repose through a Microscale Assessment

Doan, T

Indraratna, B

Nguyen, TT Rujikiatkamjorn, C

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Publisher:: American Society of Civil Engineers (ASCE)
Publication Type:: Journal Article
Citation:: International Journal of Geomechanics, 2023, 23, (1)
Issue Date:: 2023-01-01

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Field	Value	Language
dc.contributor.author	Doan, T https://orcid.org/0000-0003-0229-8376
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.contributor.author	Nguyen, TT
dc.contributor.author	Rujikiatkamjorn, C https://orcid.org/0000-0001-8625-2839
dc.date.accessioned	2023-01-17T06:03:34Z
dc.date.available	2023-01-17T06:03:34Z
dc.date.issued	2023-01-01
dc.identifier.citation	International Journal of Geomechanics, 2023, 23, (1)
dc.identifier.issn	1532-3641
dc.identifier.issn	1943-5622
dc.identifier.uri	http://hdl.handle.net/10453/165067
dc.description.abstract	Cohesion and rolling friction play key roles in governing the behavior of soil; however, only a limited number of studies have been able to assess the simultaneous contributions of these two microparameters on the macroproperties of soil. In this respect, the innovation of the current study includes an attempt to examine the interplay of these two primary parameters on the angle of repose (AoR) based on the discrete-element method (DEM). Lifting cylinder tests on cohesive wet sand have been carried out in DEM, while the cohesion and rolling friction are captured through proposed computational models. In this paper, macroparameters, such as the geometry and developmental stages of sand piles obtained in DEM simulation, are compared with experimental data, while their microevolution is quantified in detail. The results show that a large AoR can only be obtained when the cohesive and rotational frictional forces work in tandem. Increasing the cohesion and rolling friction results in smaller contact numbers, with increasing chain-like connections between particles and larger pore spaces to account for a larger AoR. For the first time, this study distinctly identifies three major stages that contribute to the AoR, based on the development of contact numbers and the transformation of energy. Accordingly, the linkage between macroscale AoR and the microstructural coordination number is formulated with varying levels of cohesion and rolling friction. The DEM results prove that the more cohesive the particles are, the greater the delay in the dissipation of kinetic energy.
dc.language	en
dc.publisher	American Society of Civil Engineers (ASCE)
dc.relation.ispartof	International Journal of Geomechanics
dc.relation.isbasedon	10.1061/(ASCE)GM.1943-5622.0002632
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0905 Civil Engineering, 0914 Resources Engineering and Extractive Metallurgy
dc.subject.classification	General Mathematics
dc.title	Interactive Role of Rolling Friction and Cohesion on the Angle of Repose through a Microscale Assessment
dc.type	Journal Article
utslib.citation.volume	23
utslib.for	0905 Civil Engineering
utslib.for	0914 Resources Engineering and Extractive Metallurgy
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	open_access	*
dc.date.updated	2023-01-17T06:03:32Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	23
utslib.citation.issue	1

Abstract:

Cohesion and rolling friction play key roles in governing the behavior of soil; however, only a limited number of studies have been able to assess the simultaneous contributions of these two microparameters on the macroproperties of soil. In this respect, the innovation of the current study includes an attempt to examine the interplay of these two primary parameters on the angle of repose (AoR) based on the discrete-element method (DEM). Lifting cylinder tests on cohesive wet sand have been carried out in DEM, while the cohesion and rolling friction are captured through proposed computational models. In this paper, macroparameters, such as the geometry and developmental stages of sand piles obtained in DEM simulation, are compared with experimental data, while their microevolution is quantified in detail. The results show that a large AoR can only be obtained when the cohesive and rotational frictional forces work in tandem. Increasing the cohesion and rolling friction results in smaller contact numbers, with increasing chain-like connections between particles and larger pore spaces to account for a larger AoR. For the first time, this study distinctly identifies three major stages that contribute to the AoR, based on the development of contact numbers and the transformation of energy. Accordingly, the linkage between macroscale AoR and the microstructural coordination number is formulated with varying levels of cohesion and rolling friction. The DEM results prove that the more cohesive the particles are, the greater the delay in the dissipation of kinetic energy.

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http://hdl.handle.net/10453/165067