OBSERVATIONS ON STRESS FORCE FABRIC RELATIONSHIPS IN IDEALIZED GRANULAR-MATERIALS

被引：158

作者：

BATHURST, RJ

ROTHENBURG, L

机构：

[1] Univ of Waterloo, Canada

来源：

MECHANICS OF MATERIALS | 1990年 / 9卷 / 01期

关键词：

Computer Simulation - Friction - Strain - Stresses;

D O I：

10.1016/0167-6636(90)90030-J

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The paper presents a series of theoretical developments and numerical experiments directed at quantifying important features of the micromechanical behavior of granular media by introducing average characteristics of fabric anisotropy and certain statistical averages of contact forces. The introduced characteristics are explicitly linked to stress through a stress-force-fabric relationship. Numerical simulations are used to verify this relationship for plane assemblies and to trace the evolution of induced anisotropy in contact orientations and contact forces. It is shown that at large strain the degree of anisotropy in contact orientations achieves some limiting value and the macroscopic angle of friction at large strains can be expressed directly in terms of this value. Effects of the angle of interparticle friction and magnitude of interparticle stiffness on the shear capacity of numerical assemblies at large strain are investigated. © 1990.

引用

页码：65 / 80

页数：16

共 27 条

[1] Bathurst, A study of stress and anisotropy in idealized granular assemblies, Ph.D. Dissertation, (1985)
[2] Bathurst, Rothenburg, Micromechanical aspects of isotropic granular assemblies with linear contact interactions, J. Appl. Mech. ASME, 55, (1988)
[3] Bathurst, Rothenburg, Note on a random isotropic granular material with negative Poisson's ratio, Int. J. Eng. Sci., 26, 4, (1988)
[4] Biarez, Wiendieck, La comparaison qualitative entre l'anisotropie mécanique et l'anisotropie de structure des milieux pulvérulents, Acad. Sci. C. R., 256, (1963)
[5] Christoffersen, Mehrabadi, Nemat-Nasser, A micromechanical description of granular material behaviour, J. Appl. Mech. Trans. ASME, 48, (1981)
[6] Cundall, Strack, A discrete numerical model for granular assemblies, Géotechnique, 29, 1, (1979)
[7] Cundall, Drescher, Strack, Numerical experiments on granular assemblies
[8] Measurements and observations, IUTAM Conf. Deformation and Failure of Granular Materials, (1982)
[9] Dantu, Etude Statistique des Forces Intergranulaires dans un Milieu Pulverulent, Géotechnique, 18, 1, pp. 50-55, (1968)
[10] De Josselin de Jong, Verruijt, Etude photoelastique d'un empilement de disques, Can. Grpe Etude. Rheol., 2, pp. 73-86, (1969)

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