Friction and Hertzian contact in granular glass

被引：4

作者：

D'Anna, Gianfranco ^{[1
]}

Sellerio, Alessandro Luigi ^{[2
,3
]}

Mari, Daniele ^{[2
]}

Gremaud, Gerard ^{[2
]}

机构：

[1] Univ Appl Sci Southern Switzerland, DTI, CH-6928 Manno, Switzerland

[2] Ecole Polytech Fed Lausanne, Lab Phys Mat Complexe, CH-1015 Lausanne, Switzerland

[3] CNR IENI, I-20125 Milan, Italy

来源：

JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT | 2013年

关键词：

granular matter; friction; slow relaxation and glassy dynamics; extreme value statistics; RELAXATION; COMPACTION;

D O I：

10.1088/1742-5468/2013/05/P05009

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We study the jamming process arising in granular systems subjected to decreasing external vibration, which has features similar to the cooling of glass-forming liquids. We modify the friction between grains and observe that jamming occurs 'more easily' for grains with higher surface roughness. To understand the observed behavior we present a detailed analysis of the elastic and tribological phenomena at the length scale of the grains in contact and provide a qualitative model, where the Hertzian nonlinear elastic contact between grains plays a relevant role.

引用

页数：9

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