Thu, 21 Aug 2008 09:51:26 BST CiteULike: kdesmond's Durian http://www.citeulike.org/user/kdesmond/author/Durian CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/kdesmond/article/2783192 <i>Physical Review E, Vol. 62, No. 3. (2000), 4442.</i> Hysteresis and packing in gas-fluidized beds R Ojha N Menon DJ Durian doi:10.1103/PhysRevE.62.4442 Physical Review E, Vol. 62, No. 3. (2000), 4442. 2008-05-10T19:33:45-00:00 2000 Physical Review E 62 3 4442 American Physical Society granular_compaction qual qualifier http://www.citeulike.org/user/kdesmond/article/2184081 <i>Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), Vol. 74, No. 3. (2006)</i><br /><br />Quasi-two-dimensional bidisperse amorphous systems of steel beads are fluidized by a uniform upflow of air, so that the beads roll on a horizontal plane. The short-time ballistic motion of the beads is stochastic, with non-Gaussian speed distributions and with different average kinetic energies for the two species. The approach to jamming is studied as a function of increasing bead area fraction and also as a function of decreasing air speed. The structure of the system is measured in terms of both the Voronoi tessellation and the pair distribution function. The dynamics of the system is measured in terms of both displacement statistics and the density of vibrational states. These quantities all exhibit tell-tale features as the dynamics become more constrained closer to jamming. In particular the pair distribution function and the Voronoi cell shape distribution function both develop split peaks. And the mean-squared displacement develops a plateau of subdiffusive motion separating ballistic and diffusive regimes. Though the system is driven and athermal, this behavior is remarkably reminiscent of that in dense colloidal suspensions and supercooled liquids. One possible difference is that kurtosis of the displacement distribution peaks at the beginning of the subdiffusive regime. Approach to jamming in an air-fluidized granular bed AR Abate DJ Durian doi:10.1103/PhysRevE.74.031308 Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), Vol. 74, No. 3. (2006) 2007-12-31T22:03:17-00:00 2006 Physical Review E (Statistical, Nonlinear, and Soft Matter Physics) 74 3 APS granular_gas jamming_transition qualifier http://www.citeulike.org/user/kdesmond/article/2184079 <i>Nat Phys, Vol. 3, No. 4. (April 2007), pp. 260-264.</i> Measurement of growing dynamical length scales and prediction of the jamming transition in a granular material Aaron Keys Adam Abate Sharon Glotzer Douglas Durian doi:10.1038/nphys572 Nat Phys, Vol. 3, No. 4. (April 2007), pp. 260-264. 2007-12-31T22:01:32-00:00 2007 Nat Phys 3 4 260 264 granular jamming jamming_transition qualifier http://www.citeulike.org/user/kdesmond/article/2184059 <i>Nat Phys, Vol. 3, No. 6. (June 2007), pp. 420-423.</i> Unified force law for granular impact cratering Hiroaki Katsuragi Douglas Durian doi:10.1038/nphys583 Nat Phys, Vol. 3, No. 6. (June 2007), pp. 420-423. 2007-12-31T21:38:11-00:00 2007 Nat Phys 3 6 420 423 granular granular_impact qualifier http://www.citeulike.org/user/kdesmond/article/2184024 <i>Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), Vol. 72, No. 4. (2005)</i><br /><br />We present data for the time dependence of wooden spheres penetrating into a loose noncohesive packing of glass beads. The stopping time is a factor of 3 longer than the time d/v0 needed to travel the total penetration distance d at the impact speed v0. The acceleration decreases monotonically throughout the impact. These kinematics are modeled by a position- and velocity-dependent stopping force that is constrained to reproduce prior observations for the scaling of the penetration depth with the total drop distance. Dynamics of shallow impact cratering MA Ambroso RD Kamien DJ Durian doi:10.1103/PhysRevE.72.041305 Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), Vol. 72, No. 4. (2005) 2007-12-31T21:14:27-00:00 2005 Physical Review E (Statistical, Nonlinear, and Soft Matter Physics) 72 4 APS granular impact qualifier