Subparticle stress fields in granular solids

Abstract : We rely on the lattice element method to simulate and analyze the stress fields at subparticle scales in two-dimensional granular solids composed of particles of variable stiffness together with an interstitial matrix of variable volume fraction. We find that the contact force distributions as approached from the subscale stresses are similar to those obtained from a particle-scale discrete element approach. This means that the well-known properties of force distributions in model granular media, with hard particles and without an interstitial phase, can be extended to materials such as concrete and sandstone involving a jammed particle phase. Interestingly, the stress distributions are exponential at the contact zones and they are mainly guided by the particle phase in compression and by the matrix in tension. We also show that the distributions are increasingly broader for a decreasing matrix volume fraction in tension whereas in compression they depend only on the particle stiffness.
Type de document :
Article dans une revue
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2009, 79, pp.051302. <10.1103/PhysRevE.79.051302>
Liste complète des métadonnées


https://hal.archives-ouvertes.fr/hal-00689882
Contributeur : Farhang Radjai <>
Soumis le : vendredi 20 avril 2012 - 14:41:28
Dernière modification le : vendredi 9 juin 2017 - 10:42:53
Document(s) archivé(s) le : samedi 21 juillet 2012 - 02:27:21

Fichier

topin.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Topin Vincent, Farhang Radjai, Jean-Yves Delenne. Subparticle stress fields in granular solids. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2009, 79, pp.051302. <10.1103/PhysRevE.79.051302>. <hal-00689882>

Partager

Métriques

Consultations de
la notice

102

Téléchargements du document

111