Browsing by Author "Behringer, RP"
Now showing items 1-11 of 11
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Dense granular flow - A collaborative study
(Powder Technology, 2015-11-01)© 2015 Elsevier B.V..The International Fine Powder Research Institute (IFPRI) has funded an extensive program in dry powder and granular flows, including a focused study on dense flows of interest to a range of industrial ... -
Granular Impact Dynamics: Acoustics and Fluctuations
In the corresponding fluid dynamics video, created for the APS DFD 2012 Gallery of Fluid Motion, we show high-speed videos of 2D granular impact experiments, where an intruder strikes a collection of bidisperse photoelastic ... -
Jamming for a 2D granular material
(Soft Matter, 2010-07-07)This paper focuses on the nature of jamming, as seen in two-dimensional frictional granular systems consisting of photoelastic particles. The photoelastic technique is unique at this time, in its capability to provide detailed ... -
Orientation, flow, and clogging in a two-dimensional hopper: Ellipses vs. disks
(EPL, 2016-05-01)© EPLA, 2016.Two-dimensional (2D) hopper flow of disks has been extensively studied. Here, we investigate hopper flow of ellipses with aspect ratio α = 2, and we contrast that behavior to the flow of disks. We use a quasi-2D ... -
Packings of 3D stars: stability and structure
(Granular Matter, 2016-05-01)© 2016, Springer-Verlag Berlin Heidelberg.We describe a series of experiments involving the creation of cylindrical packings of star-shaped particles, and an exploration of the stability of these packings. The stars cover ... -
Self-organized magnetic particles to tune the mechanical behavior of a granular system
(EPL, 2016-09-01)© 2016, EPLA.Above a certain density a granular material jams. This property can be controlled by either tuning a global property, such as the packing fraction or by applying shear strain, or at the micro-scale by tuning ... -
Shear-induced rigidity of frictional particles: Analysis of emergent order in stress space.
(Phys Rev E, 2016-04)Solids are distinguished from fluids by their ability to resist shear. In equilibrium systems, the resistance to shear is associated with the emergence of broken translational symmetry as exhibited by a nonuniform density ... -
Spanning the scales of granular materials through microscopic force imaging.
(Nat Commun, 2015-03-05)If you walk on sand, it supports your weight. How do the disordered forces between particles in sand organize, to keep you from sinking? This simple question is surprisingly difficult to answer experimentally: measuring ... -
Stress correlations in granular materials: An entropic formulation
(Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2009-12-28)We study the response of dry granular materials to external stress using experiment, simulation, and theory. We derive a Ginzburg-Landau functional that enforces mechanical stability and positivity of contact forces. In ... -
Structural templates of disordered granular media
(International Journal of Solids and Structures, 2015-01-01)© 2014 Elsevier Ltd. All rights reserved.Granular materials, in common with many complex systems, exhibit a range of self-organization processes that control their mechanical performance. Many of these processes directly ... -
The Jamming point street-lamp in the world of granular media
The Jamming of soft spheres at zero temperature, the J-point, has been extensively studied both numerically and theoretically and can now be considered as a safe location in the space of models, where a street lamp has been ...
