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Measurements of Gravity Driven Granular Channel Flows
Measurements of Gravity Driven Granular Channel Flows
2014/11/20
This dissertation presents experiments that studied two gravity driven granular channel flows. The first experiment used magnetic resonance imaging to measure the density and displacement distribution...
In this thesis we report experimental and simulation study of granular gases. As a non-equilibrium system composed of macroscopic particles, a granular gas often shows a picture similar to a molecular...
Granular packings of cohesive elongated particles
Granular matter Molecular Dynamics nonspherical particles Quicksand Collapsible soil
2011/8/17
Abstract: We report numerical results of effective attractive forces on the packing properties of two-dimensional elongated grains. In deposits of non-cohesive rods in 2D, the topology of the packing ...
Crossover from negative to positive shear rate dependence in granular friction
Crossove granular friction
2011/9/9
We conduct an experiment on the frictional properties of granular matter over a wide range of shear rate that covers both the quasistatic and the inertial regimes. We show that the friction coefficien...
Laboratory experiments and numerical simulation reveal that a submerged intruder dragged hor-
izontally at constant velocity within a granular medium experiences a lift force whose sign and
magnitud...
Tunable Vibrational Band Gaps in One-Dimensional Diatomic Granular Crystals with Three-Particle Unit Cells
Tunable Vibrational Band Gaps One-Dimensional Diatomic Granular Three-Particle Unit Cells
2010/11/18
We investigate the tunable vibration filtering properties of one-dimensional diatomic granular crystals composed of arrays of stainless steel spheres and cylinders interacting via Hertzian contact. Th...
How granular materials deform in quasistatic conditions
granular materials elastoplasticity stress-strain behavior
2010/11/19
Based on numerical simulations of quasistatic deformation of model granular materials, two rheological regimes are distinguished, according to whether macroscopic strains merely reflect microscopic ma...
Experimental evidence of ageing and slow restoration of the weak-contact configuration in tilted 3D granular packings
Granular solids Nonlinear acoustic probing Avalanches
2010/11/19
Granular packings slowly driven towards their instability threshold are studied using a digital imaging technique as well as a nonlinear acoustic method. The former method allows us to study grain rea...
Incremental response of granular materials: DEM results
discrete element simulation incremental behavior elastoplasticity flow rule hardening
2010/11/18
We systematically investigate the incremental response of various equilibrium states of dense 2D model granular materials, along the biaxial compression path (s11 are...
Effects of Ag Addition on Some Physical Properties of Granular YBa2Cu3O7-δ Superconductor
High-TC Superconductor Polycrystalline YBCO Ag Addition
2010/7/8
The effects of Ag addition on some physical properties of YBa2Cu3O7−d superconductor has been studied. The samples were produced by different routes and characterized by scanning electron micros...
Discrete Breathers in One-Dimensional Diatomic Granular Crystals
Discrete Breathers One-Dimensional Diatomic Granular Crystals
2010/4/7
We report the experimental observation of discrete breathers in a one-dimensional diatomic granular crystal composed of compressed elastic beads that interact via Hertzian contact. We first characteri...
Granular flow in equilibrium with the bottom:experimental analysis and theoretical prediction
Granular flow in equilibrium experimental analysis theoretical prediction
2009/11/12
The paper presents measurements performed on the granular flow that develops in a drum partially filled with sand grains and rotating at various speeds. The aims of the paper are: to provide experimen...
Granular thin film samples composed of Fe clusters embedded in CdFeS were prepared with using low pressure metal organic chemical vapor deposition.Temperature dependence of the resistivity of the gran...
Dynamic Properties of Two-Dimensional Polydisperse Granular Gases
fractal fractal dimension polydisperse mixture
2007/8/15
2007Vol.48No.2pp.343-347DOI:
Dynamic Properties of Two-Dimensional Polydisperse Granular Gases
LI Rui, ZHANG Duan-Ming, HUANG Ming-Tao, SU Xiang-Ying, CHEN Zhi-Yuan, ZHU Hong-Yin...
Power-Law in Depth-Dependence of Signal Speed in Vertical
Granular Chain
soliton granular chain phase velocity power-law behavior
2007/8/15
2001Vol.36No.2pp.199-202DOI:
Power-Law in Depth-Dependence of Signal Speed in Vertical
Granular Chain
XU Ai-Guo and Hong Jongbae
Department of Physics and Center for Str...