We present results from a series of experiments on a granular medium sheared in a Couette geometry and show that their statistical properties can be computed in a quantitative way from the assumption that the resultant from the set of forces acting in the system performs a Brownian motion. The same assumption has been utilized, with success, to describe other phenomena, such as the Barkhausen effect in ferromagnets, and so the scheme suggests itself as a more general description of a wider class of driven instabilities.

Brownian forces in sheared granular matter / A., Baldassarri; F., Dalton; A., Petri; S., Zapperi; G., Pontuale; Pietronero, Luciano. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 96:11(2006), p. 118002. [10.1103/physrevlett.96.118002]

Brownian forces in sheared granular matter

PIETRONERO, Luciano
2006

Abstract

We present results from a series of experiments on a granular medium sheared in a Couette geometry and show that their statistical properties can be computed in a quantitative way from the assumption that the resultant from the set of forces acting in the system performs a Brownian motion. The same assumption has been utilized, with success, to describe other phenomena, such as the Barkhausen effect in ferromagnets, and so the scheme suggests itself as a more general description of a wider class of driven instabilities.
2006
critical-dynamics; dilatancy; domain-wall; friction
01 Pubblicazione su rivista::01a Articolo in rivista
Brownian forces in sheared granular matter / A., Baldassarri; F., Dalton; A., Petri; S., Zapperi; G., Pontuale; Pietronero, Luciano. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 96:11(2006), p. 118002. [10.1103/physrevlett.96.118002]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1750
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