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<datestamp>2018-01-11</datestamp>
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<title lang=en>Comparison of the effects of rolling resistance and angularity 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 ; 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>AIP Conference Proceedings</source>
<source>Powder and Grains 2013</source>
<coverage>Sydney, Australia</coverage>
<identifier>hal-00842799</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00842799</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00842799/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00842799/file/Comparison_effects_rolling_Estrada_al.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00842799</source>
<source>Powder and Grains 2013, 2013, Sydney, Australia. pp.891-894, 2013</source>
<language>en</language>
<subject lang=en>Granular material</subject>
<subject lang=en>rolling resistance</subject>
<subject lang=en>angularity</subject>
<subject lang=en>shear strength</subject>
<subject lang=en>solid fraction</subject>
<subject lang=en>anisotropy</subject>
<subject lang=en>force distribution</subject>
<subject>PACS: 45.70.Ðn, 45.50.Ðj, 83.10.Rs, 83.80.Fg</subject>
<subject>[SPI.MECA.MEMA] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph]</subject>
<subject>[PHYS.MECA.MEMA] Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph]</subject>
<subject>[SPI.MECA.MSMECA] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Materials and structures in mechanics [physics.class-ph]</subject>
<subject>[PHYS.MECA.MSMECA] Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph]</subject>
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<type>Conference papers</type>
<description lang=en>In this paper, 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. For this purpose, we use contact dynamics simulations. By means of a simple shear numerical device, we investigate the mechanical behavior of these materials in the steady state in terms of shear strength, solid fraction, force and fabric anisotropies, and probability distribution of contact forces. We find 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>2013</date>
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