223 citations · 751 across the 24 of their papers we have counts for
23 papers · 1 filter
Experimental Study of the Nematic Transition in Granular Spherocylinder Packings under Tapping
Haitao Yu, Zhikun Zeng, Ye Yuan +3
Using x-ray tomography, we experimentally investigate the nematic transition in granular spherocylinder packings induced by tapping. Upon the validation of the Edwards ensemble fra…
Experimental Study of Granular Clogging in Two-Dimensional Hopper
Shuyang Zhang, Zhikun Zeng, Houfei Yuan +5
We experimentally investigate the clogging process of granular materials in a two-dimensional hopper, and present a self-consistent physical mechanism of clogging based on preforme…
From creep to flow: Granular materials under cyclic shear
Ye Yuan, Zhikun Zeng, Yi Xing +4
Granular materials such as sand, powders, and grains are omnipresent in daily life, industrial applications, and earth-science [1]. When unperturbed, they form stable structures th…
Equivalence of fluctuation-dissipation and Edwards' temperature in cyclically sheared granular systems
Zhikun Zeng, Shuyang Zhang, Xu Zheng +4
Using particle trajectory data obtained from x-ray tomography, we determine two kinds of effective temperatures in a cyclically sheared granular system. The first one is obtained f…
Connecting packing efficiency of binary hard sphere systems to their intermediate range structure
Houfei Yuan, Zhen Zhang, Walter Kob +1
Using computed x-ray tomography we determine the three dimensional (3d) structure of binary hard sphere mixtures as a function of composition and size ratio of the particles, q. Us…
Influence of Roughness on Granular Avalanches
Jie Zheng, Yi Xing, Ye Yuan +10
Combining X-ray tomography with simultaneous shear force measurement, we investigate shear-induced granular avalanches using spherical particles with different surface roughness. W…
Contact force measurements and local anisotropy in ellipses and disks
Yinqiao Wang, Jin Shang, Yujie Wang +1
Experimental measurements of contact forces are limited to spheres and disks in three and two dimensions, making the evaluation of the shape effect and universality of force distri…
Experimental evidence of detailed balance in granular systems
Xulai Sun, Yinqiao Wang, Yujie Wang +2
The principle of detailed balance (DB) states that every kinetic transition in a system with many micro-states, , is balanced, on average, with the opposite transition, $μ_i\lef…
Disorder-induced vibrational anomalies from crystalline to amorphous solids
Ling Zhang, Yinqiao Wang, Yangrui Chen +8
The origin of boson peak -- an excess of density of states over Debye's model in glassy solids -- is still under intense debate, among which some theories and experiments suggest t…
Critical behaviors of jamming in cyclically sheared frictional hard granular particles
Aile Sun, Yinqiao Wang, Yangrui Chen +5
In stark contrast to the jamming of frictionless hard-sphere (hard-disk if in two dimensions) packings, the critical jamming of frictional packings is much more elusive and still u…
Experimental Test on Edwards Volume Ensemble of Tapped Granular Packings
Ye Yuan, Yi Xing, Jie Zheng +9
Using X-ray tomography, we experimentally investigate granular packings subject to mechanical tapping for three types of beads with different friction coefficients. We validate Edw…
X-ray tomography investigation of cyclically sheared granular materials
Yi Xing, Jie Zheng, Jindong Li +4
We perform combined X-ray tomography and shear force measurements on a cyclically sheared granular system with highly transient behaviors, and obtain the evolution of microscopic s…
Granular Segregation Mechanisms by Cyclic Shear
Zhifeng Li, Zhikun Zeng, Yi Xing +6
We present an X-ray tomography study of the segregation mechanisms of tracer particles in a three-dimensional cyclically sheared bi-disperse granular medium. Big tracers are dragge…
Friction-controlled entropy-stability competition in granular systems
Xulai Sun, Walter Kob, Raphael Blumenfeld +3
Using cyclic shear to drive a two dimensional granular system, we determine the structural characteristics for different inter-particle friction coefficients. These characteristics…
Connecting shear localization with the long-range correlated polarized stress fields in granular materials
Yinqiao Wang, Yujie Wang, Jie Zhang
One long-lasting puzzle in amorphous solids is shear localization, where local plastic deformation involves cooperative particle rearrangements in small regions of a few inter-part…
Random packing of rods in small containers
Julian O. Freeman, Sean Peterson, Cong Cao +3
We conduct experiments and simulations to study the disordered packing of rods in small containers. Experiments study cylindrical rods with aspect ratio ranging from 4 to 32; simul…
Disentangling boson peaks and Van Hove singularities in a model glass
Yinqiao Wang, Liang Hong, Yujie Wang +2
Using the example of a two-dimensional macroscopic model glass in which the interparticle forces can be precisely measured, we obtain strong hints for resolving a controversy conce…
Structural and Topological Nature of Plasticity in Sheared Granular Materials
Yixin Cao, Jindong Li, Binquan Kou +9
Upon mechanical loading, granular materials yield and undergo plastic deformation. The nature of plastic deformation is essential for the development of the macroscopic constitutiv…
Granular materials flow like complex fluids
Binquan Kou, Yixin Cao, Jindong Li +7
Granular materials such as sand, powders, foams etc. are ubiquitous in our daily life, as well as in industrial and geotechnical applications. Although these disordered systems for…
Origin of Non-cubic Scaling Law in Disordered Granular Packing
Chengjie Xia, Jindong Li, Bingquan Kou +9
Recent diffraction experiments on metallic glasses have unveiled an unexpected non-cubic scaling law between density and average interatomic distance, which lead to the speculation…
Granular packing as model glass formers
Yujie Wang
Static granular packings are model hard-sphere glass formers. The nature of glass transition has remained a hotly debated issue. We review recent experimental progresses in using g…
The structural origin of the hard-sphere glass transition in granular packing
Chengjie Xia, Jindong Li, Yixin Cao +5
Glass transition is accompanied by a rapid growth of the structural relaxation time and a concomitant decrease of configurational entropy. It remains unclear whether the transition…
Bridges in three-dimensional granular packings: experiments and simulations
Yixin Cao, Bandan Chakrabortty, G. C. Barker +2
In this letter, we present the first experimental study of bridge structures in three-dimensional dry granular packings. When bridges are small, they are predominantly 'linear', an…