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Phys. Rev. E 66, 021304 (2002) [7 pages]

Aging in humid granular media

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Frédéric Restagno1,2,*, Cécile Ursini1, Hervé Gayvallet1, and Élisabeth Charlaix2
1Laboratoire de Physique, École Normale Supérieure de Lyon, 46 allée d’Italie, 69364 Lyon cedex 07, France
2Département de Physique des Matériaux, Université Claude Bernard, Batiment Léon Brillouin, 43 boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France

Received 22 February 2002; published 23 August 2002

Aging behavior is an important effect in the friction properties of solid surfaces. In this paper we investigate the temporal evolution of the static properties of a granular medium by studying the aging over time of the maximum stability angle of submillimetric glass beads. We report the effect of several parameters on these aging properties, such as the wear on the beads, the stress during the resting period, and the humidity content of the atmosphere. Aging effects in an ethanol atmosphere are also studied. These experimental results are discussed at the end of the paper.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.66.021304
DOI:
10.1103/PhysRevE.66.021304
PACS:
45.70.Ht, 83.80.Fg, 68.08.Bc

*Author to whom correspondence should be addressed. Present address: Laboratoire des Fluides Organisés, Collège de France, 11 place Marcelin Berthelot, 75005 Paris, France; email address: frederic.restagno@college-de-france.fr

 
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