Phase transition in a static granular system

Details Phase transition in a static granular system Phase transition in a static granular system

2006-06-16

arxiv.org/abs/cond-mat/0606459v2

EPL 78 (2007) 44004

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures. The paper is significantly extended, including new data

Scientific paper

10.1209/0295-5075/78/44004

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 $\phi$ 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 $\phi=0.60$ for a range of speeds of the rod.

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