États de compacité maximale pour les mélanges binaires de grains sphériques : étude par simulation numérique

Simple item page
dc.creatorRoux, Jean-Noël
dc.creatorChevoir, François
dc.creatorToussaint, Fabrice
dc.date2009-01-22
dc.date.accessioned2026-07-07T12:32:58Z
dc.date.available2026-07-07T12:32:58Z
dc.descriptionDisordered assemblies with maximum packing fraction are studied by discrete element numerical simulation for monodisperse or bidisperse spherical particles, the diameter ratio being set at three. A maximum packing fraction value corresponds to an equilibrium state under isotropic loading of rigid frictionless particles. A statistical study of size effects enables one to evaluate, in the limit of large systems, the maximum packing fractions of both monodisperse assemblies, for which the conventional value 0.639 is retrieved, and bidisperse ones, for two distinct values of the coarse particle volume fraction. An enduring initial assembling step in which agitated grains interact through collisions induces an increase in the final packing fraction due to crystalline order nucleation for a monodisperse system or to a gradual segregation for a binary mixture. Albeit slow and moderate in a number of practical situations, this effect leads to a definition of the random close packing state, as the one obtained with frictionless rigid grains under an isotropic pressure in the limit of fast assembling processes. A few potential extensions to this preliminary study are suggested.
dc.description15 pages, 3 figures. Article in French. A free English translation is available on the web site of the journal : http://www.lcpc.fr/en/sources/blpc/index.php
dc.identifierhttps://arxiv.org/abs/0901.3481
dc.identifierhttp://arxiv.org/abs/0901.3481
dc.identifierBulletin des Laboratoires des Ponts et Chaussées 268-269 (2007) pp. 141-152
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216968
dc.subjectMaterials Science
dc.subjectDisordered Systems and Neural Networks
dc.subjectClassical Physics
dc.titleÉtats de compacité maximale pour les mélanges binaires de grains sphériques : étude par simulation numérique
dc.typetext

Files

Collections

arXiv