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<title lang=en>Identification of rolling resistance as a shape parameter in sheared granular media</title>
<creator>Estrada, Nicolas</creator>
<creator>Azéma, Emilien</creator>
<creator>Radjai, Farhang</creator>
<creator>Taboada, Alfredo</creator>
<contributor>Departamento de Ingeniería Civil y Ambiental - CeiBA Complex Systems Research Center, Universidad de Los Andes ; Universidad de Los Andes</contributor>
<contributor>Physique et Mécanique des Milieux Granulaires (PMMG) ; Laboratoire de Mécanique et Génie Civil (LMGC) ; Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Risques ; Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>ISSN: 1539-3755</source>
<source>EISSN: 1550-2376</source>
<source>Physical Review E : Statistical, Nonlinear, and Soft Matter Physics</source>
<publisher>American Physical Society</publisher>
<identifier>hal-00594891</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00594891</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00594891/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00594891/file/Estrada2010ReSubmitV2.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00594891</source>
<source>Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2011, 84, pp.011306. 〈10.1103/PhysRevE.84.011306〉</source>
<identifier>ARXIV : 1105.4418</identifier>
<relation>info:eu-repo/semantics/altIdentifier/arxiv/1105.4418</relation>
<identifier>DOI : 10.1103/PhysRevE.84.011306</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevE.84.011306</relation>
<language>en</language>
<subject lang=en>rolling resistance</subject>
<subject lang=en>rolling friction</subject>
<subject lang=en>angularity</subject>
<subject lang=en>anisotropy</subject>
<subject>PACS: 45.70.-n, 45.50.-j, 83.10.Rs, 83.80.Fg</subject>
<subject>[PHYS.MECA.MEMA] Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph]</subject>
<subject>[SPI.MECA.MEMA] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph]</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Using contact dynamics simulations, we compare the effect of rolling resistance at the contacts in granular systems composed of disks with the effect of angularity in granular systems composed of regular polygonal particles. In simple shear conditions, we consider four aspects of the mechanical behavior of these systems in the steady state: shear strength, solid fraction, force and fabric anisotropies, and probability distribution of contact forces. Our main finding is that, based on the energy dissipation associated with relative rotation between two particles in contact, the effect of rolling resistance can explicitly be identified with that of the number of sides in a regular polygonal particle. This finding supports the use of rolling resistance as a shape parameter accounting for particle angularity and shows unambiguously that one of the main influencing factors behind the mechanical behavior of granular systems composed of noncircular particles is the partial hindrance of rotations as a result of angular particle shape.</description>
<date>2011-07-28</date>
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