颗粒流是高速远程滑坡物质演化过程的一个重要阶段, 也是从细观角度揭示其超常运动特性的
重要手段. 颗粒流所采用的主要研究方法以及取得的重要理论成果, 可以为高速远程滑坡动力学 …

We investigate experimentally granular piles exhibiting steady surface flow. Below the
surface flow, it has been believed that a “frozen” bulk region exists, but our results show no …

A non-local theory is proposed to model dense granular flows. The idea is to describe the
rearrangements occurring when a granular material is sheared as a self-activated process …

The particle dynamics and shear forces of granular matter in a Couette geometry are
determined experimentally. The normalized tangential velocity V (y) declines strongly with …

We analyze the main features of granular shear flow through experimental measurements in
a Couette geometry and a comparison to a locally Newtonian, continuum model of granular …

Many models of slow, dense granular flows,,,, assume that the internal stresses are
independent of the shearing rate. In contrast, logarithmic rate dependence is found in solid …

Constitutive equations are proposed for dense materials, based on the identification of two
types of free-volume activated rearrangements associated with shear and compaction. Two …

Understanding the mechanisms behind time-dependent behaviour of granular materials is
important in assessing ageing of dynamically improved sands and set-up of displacement …

Reproducible planar tunnel junctions based on high-quality YBa 2 Cu 3 O 7 thin films are
studied as a junction of crystallographic orientation. Using Pb as a counter-electrode, all …

We have studied the dynamics of avalanching wet granular media in a rotating drum
apparatus. Quantitative measurements of the flow velocity and the granular flux during …