We present results from a series of experiments on a granular medium sheared in a Couette geometryand show that their statistical properties can be computed in a quantitative way from the assumption thatthe resultant from the set of forces acting in the system performs a Brownian motion. The sameassumption has been utilized, with success, to describe other phenomena, such as the Barkhausen effectin ferromagnets, and so the scheme suggests itself as a more general description of a wider class of driveninstabilities.
Granular shearing and Barkhausen noise
Baldassarri A.;Petri A.;Pietronero L.;Pontuale G.;Zapperi S.
2007
Abstract
We present results from a series of experiments on a granular medium sheared in a Couette geometryand show that their statistical properties can be computed in a quantitative way from the assumption thatthe resultant from the set of forces acting in the system performs a Brownian motion. The sameassumption has been utilized, with success, to describe other phenomena, such as the Barkhausen effectin ferromagnets, and so the scheme suggests itself as a more general description of a wider class of driveninstabilities.File in questo prodotto:
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