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J. Phys. Soc. Jpn. 77 (2008) 123002 (4 pages)  |Previous Article| |Next Article|  |Table of Contents|
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Scaling Properties of Granular Rheology near the Jamming Transition

Takahiro Hatano

Earthquake Research Institute, University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo 113-0032

(Received September 29, 2008; Accepted October 27, 2008; Published December 10, 2008)

The rheological properties of a dense granular material consisting of frictionless spheres are investigated. It is found that shear stress, pressure, and kinetic temperature obey critical scaling near the jamming transition point, which is considered as a critical point. These scaling laws have some peculiar properties from the viewpoint of conventional critical phenomena because the exponents depend on the interparticle force model so that they are not universal. It is also found that these scaling laws imply the relation between the exponents that describe the growing correlation length. ©2008 The Physical Society of Japan

URL: http://jpsj.ipap.jp/link?JPSJ/77/123002/
DOI: 10.1143/JPSJ.77.123002


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