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research article
Friction and Hertzian contact in granular glass
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.
Type
research article
Web of Science ID
WOS:000319737300010
Authors
Publication date
2013
Publisher
Article Number
P05009
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
October 1, 2013
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