Phase transition in a static granular system
arXiv:cond-mat/0606459 · doi:10.1209/0295-5075/78/44004
Abstract
We find that a column of glass beads exhibits a well-defined transition between two phases that differ in their resistance to shear. Pulses of fluidization are used to prepare static states with well-defined particle volume fractions in the range 0.57-0.63. The resistance to shear is determined by slowly inserting a rod into the column of beads. The transition occurs at for a range of speeds of the rod.
4 pages, 4 figures. The paper is significantly extended, including new data
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