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Brownian forces in sheared granular matter

Andrea Baldassarri·Fergal Dalton·Alberto Petri·Stefano Zapperi·Giorgio Pontuale·Luciano Pietronero
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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 utilised, 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.

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BibTeXRIS

Andrea Baldassarri, Fergal Dalton, Alberto Petri, Stefano Zapperi, Giorgio Pontuale, Luciano Pietronero. 2006-02-23. Brownian forces in sheared granular matter. https://doi.org/10.1103/physrevlett.96.118002

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