Numerical model of crushing of grains inside two-dimensional granular materials

被引：293

作者：

Tsoungui, O ^{[1
]}

Vallet, D ^{[1
]}

Charmet, JC ^{[1
]}

机构：

[1] Ecole Super Phys & Chim Ind Ville Paris, Phys & Mecan Milieux Heterogenes Lab, CNRS, URA 857, F-75231 Paris 05, France

来源：

POWDER TECHNOLOGY | 1999年 / 105卷 / 1-3期

关键词：

fracture physics; particle breakage; granular medium; comminution;

D O I：

10.1016/S0032-5910(99)00137-0

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A theoretical model is proposed to define the failure criterion on an individual grain subjected to an arbitrary set of contact forces. The model is implemented in a two-dimensional computer simulation code based on the molecular dynamics method to study the crushing mechanisms of grains inside a granular material under oe dometric compression. The simulation results are partially compared with experiments performed on granular packings composed of moulding plaster disks of uniform thickness under an oe dometric compression, and a good agreement has been achieved. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：190 / 198

页数：9

共 23 条

[1]

ALLEN MP, 1987, COMPUTERS SIMULATION

[2]

Arbiter N., 1969, T SOC MIN ENG AIME, V244, P118

[3]

ASTROM JA, 1998, UNPUB EUR PHYS J B

[4] MICROMECHANICAL ASPECTS OF ISOTROPIC GRANULAR ASSEMBLIES WITH LINEAR CONTACT INTERACTIONS [J].

BATHURST, RJ ;

ROTHENBURG, L .

JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, 1988, 55 (01) :17-23

[5]

DRLIK GJ, 1987, THESIS MIT BOSTON

[6]

Falconer K. J., 1985, The geometry of fractal sets

[7]

GHADIRI M, 1997, POWDERS GRAINS 97

[8] SPACE-FILLING BEARINGS [J].

HERRMANN, HJ ;

MANTICA, G ;

BESSIS, D .

PHYSICAL REVIEW LETTERS, 1990, 65 (26) :3223-3226

[9]

HERRMANN HJ, 1993, DISORDER GRANULAR ME

[10] APPLICATION OF SCATTERED-LIGHT PHOTOELASTICITY IN DETERMINATION OF SIDE PRESSURE DISTRIBUTION OF PRESSED POWDER BED [J].

ITO, Y ;

KUNO, H .

POWDER TECHNOLOGY, 1978, 20 (01) :127-131

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