Capillary cohesion of wet granular media

Abstract : In this chapter, the behavior of unsaturated granular materials will be analyzed by focusing mainly on capillary cohesion. Two formulations of the capillary cohesion law will be presented in section 9.2. The first one was proposed by Soulié [SOU 05, SOU 06b]. It expresses the capillary force as a function of the interparticle distance and the volume of the liquid bond between two particles of different sizes. This formu- lation has been validated by an experimental study at the scale of the liquid bond. The second formulation proposed later by Richefeu et al. [RIC 06b, RIC 07] is an analyti- cal expression based on physical considerations. A 3D molecular dynamics code was developed in which the capillary interaction law for the simulation of wet granular ma- terials was implemented [RIC 05]. The simulations of direct shear [RIC 05, RIC 06a] and simple compression [SOU 05, RIC 05, SOU 06a] tests are presented in sections 9.3 and 9.4, respectively. The focus in both cases will be on the influence of capillary cohesion on the macroscopic mechanical behavior and failure of wet granular media.
Type de document :
Chapitre d'ouvrage
F. Nicot et R. Wan. Micromechanics of Failure in Granular Geomaterials, Wiley-Iste, pp.37, 2009, 1-84821-128-7
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-00690055
Contributeur : Farhang Radjai <>
Soumis le : samedi 21 avril 2012 - 02:10:01
Dernière modification le : lundi 13 octobre 2014 - 15:43:25

Identifiants

  • HAL Id : hal-00690055, version 1

Collections

Citation

Moulay Saïd El Youssoufi, Farhang Radjai, Vincent Richefeu, Fabien Soulié. Capillary cohesion of wet granular media. F. Nicot et R. Wan. Micromechanics of Failure in Granular Geomaterials, Wiley-Iste, pp.37, 2009, 1-84821-128-7. <hal-00690055>

Partager

Métriques

Consultations de la notice

119