Bridges in three-dimensional granular packings: Experiments and simulations

被引：28

作者：

Cao, Y. X. ^{[1
]}

Chakrabortty, B. ^{[2
]}

Barker, G. C. ^{[3
]}

Mehta, A. ^{[2
]}

Wang, Y. J. ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China

[2] SN Bose Natl Ctr Basic Sci, Theory Dept, Kolkata 700098, W Bengal, India

[3] Inst Food Res, Norwich NR4 7UA, Norfolk, England

来源：

EPL | 2013年 / 102卷 / 02期

基金：

美国国家科学基金会; 英国生物技术与生命科学研究理事会;

关键词：

VIBRATED POWDERS; TRANSITION; DYNAMICS;

D O I：

10.1209/0295-5075/102/24004

中图分类号：

O4 [物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

In this letter, we present the first experimental study of bridge structures in three-dimensional dry granular packings. When bridges are small, they are predominantly "linear", and have an exponential size distribution. Larger, predominantly "complex" bridges, are confirmed to follow a power-law size distribution. Our experiments, which use X-ray tomography, are in good agreement with the simulations presented here, for the distribution of sizes, end-to-end lengths, base extensions and orientations of predominantly linear bridges. Quantitative differences between the present experiment and earlier simulations suggest that packing fraction is an important determinant of bridge structure. Copyright (C) EPLA, 2013

引用

页数：5

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