Force Attractor in Confined Comminution of Granular Materials

被引：76
|
作者：
Ben-Nun, O. [1 ]
Einav, I. [1 ]
Tordesillas, A. [2 ]
机构：
[1] Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia
[2] Univ Melbourne, Dept Math & Stat, Melbourne, Vic 3010, Australia
来源：
PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 10期
关键词：
ONE-DIMENSIONAL COMPRESSION; PACKING; FRAGMENTATION; DEFORMATION; GRAINS; MODEL; FLOW;
D O I：
10.1103/PhysRevLett.104.108001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We reveal a novel attractor in the space of contact forces that bounds the behavior of granular materials during confined comminution. The attractor is reached asymptotically as the porosity reduces and the grain size distribution attains an ultimate power law scaling. The ultimate distribution of the contact forces follows a clear log-normal distribution, distinctively different from previous observations in uncrushable systems. Supporting evidence comes both from comprehensive discrete element simulations and a theoretical Apollonian model.
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页数：4
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