Sat, 19 Jul 2008 03:06:36 BST CiteULike: dchen's Corwin http://www.citeulike.org/user/dchen/author/Corwin CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dchen/article/2877945 <i>Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), Vol. 77, No. 3. (2008)</i><br /><br />The flow properties in a granular system confined by a rapidly rotated bottom surface and fixed walls are investigated. Above sufficiently high rotation rates the system enters a state in which the flow is independent of the driving rate. Further, a nearly constant shear-strain rate is measured throughout the entire system. Optical and particle imaging velocimetry methods are used to measure the surface flows, and large-scale molecular dynamics simulations are performed to model the flows both at the surface and in the interior of the material. The analysis shows a regime of granular flow in which shear banding is absent. Granular flow in a rapidly rotated system with fixed walls Eric Corwin doi:10.1103/PhysRevE.77.031308 Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), Vol. 77, No. 3. (2008) 2008-06-09T19:28:36-00:00 2008 Physical Review E (Statistical, Nonlinear, and Soft Matter Physics) 77 3 APS band flow grains shear http://www.citeulike.org/user/dchen/article/235185 <i>Nature, Vol. 435, No. 7045., pp. 1075-1078.</i> Structural signature of jamming in granular media Eric Corwin Heinrich Jaeger Sidney Nagel doi:10.1038/nature03698 Nature, Vol. 435, No. 7045., pp. 1075-1078. 2005-06-23T02:21:24-00:00 Nature 0028-0836 435 7045 1075 1078 Nature Publishing Group grains jamming nagel nature http://www.citeulike.org/user/dchen/article/2713887 <i>Physical Review Letters, Vol. 91, No. 22. (24 November 2003), 224501.</i> Flow and Fracture in Drying Nanoparticle Suspensions ER Dufresne EI Corwin NA Greenblatt J Ashmore DY Wang AD Dinsmore JX Cheng XS Xie JW Hutchinson DA Weitz doi:10.1103/PhysRevLett.91.224501 Physical Review Letters, Vol. 91, No. 22. (24 November 2003), 224501. 2008-04-24T18:38:32-00:00 2003 Physical Review Letters 91 22 224501 American Physical Society dinsmore drying weitz http://www.citeulike.org/user/dchen/article/2553060 <i>Physical Review Letters, Vol. 99, No. 3. (2007)</i><br /><br />Noncohesive granular media exhibit complex responses to sudden impact that often differ from those of ordinary solids and liquids. We investigate how this response is mediated by the presence of interstitial gas between the grains. Using high-speed x-ray radiography we track the motion of a steel sphere through the interior of a bed of fine, loose granular material. We find a crossover from nearly incompressible, fluidlike behavior at atmospheric pressure to a highly compressible, dissipative response once most of the gas is evacuated. We discuss these results in light of recent proposals for the drag force in granular media. Gas-Mediated Impact Dynamics in Fine-Grained Granular Materials John Royer Eric Corwin Peter Eng Heinrich Jaeger doi:10.1103/PhysRevLett.99.038003 Physical Review Letters, Vol. 99, No. 3. (2007) 2008-03-18T21:56:43-00:00 2007 Physical Review Letters 99 3 APS 2007 grains