Scaling Properties of Granular Rheology near the Jamming Transition
Scaling Properties of Granular Rheology near the Jamming Transition
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DOI：
10.1143/jpsj.77.123002
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发表时间：
2008-12-01
影响因子：
1.7
通讯作者：
Hatano, Takahiro
中科院分区：
文献类型：
--
作者：
Hatano, Takahiro
研究了由无摩擦球体组成的致密颗粒材料的流变特性。结果表明，在堵塞转变点附近，剪切应力、压力和动力学温度服从临界标度关系，该临界点被认为是临界点。从传统的临界现象的观点来看，这些标度律具有一些特殊的性质，因为指数依赖于粒子间力模型，所以它们不是普适的。它也被发现，这些标度律意味着描述增长的相关长度的指数之间的关系。
The theological 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.