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      Relaxation Dynamics of a Granular Pile on a Vertically-Vibrating Plate

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          Abstract

          Nonlinear relaxation dynamics of a vertically-vibrated granular pile is experimentally studied. In the experiment, the local flux and slope on the relaxing pile are measured by using a high-speed laser profiler. The relation of these quantities can be modeled by the nonlinear transport law which assumes the fluidization of an entire pile by vibration. The fitting parameter in this model is only the relaxation efficiency, which characterizes the energy conversion rate from vertical vibration into horizontal transport. We demonstrate that this value is a constant independent of experimental conditions. The actual relaxation is successfully reproduced by the proposed model.

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          Author and article information

          Journal
          12 August 2017
          Article
          1708.03752
          4a0e6156-7bbf-406a-b98e-d36b6d6b374b

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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          4 pages, 3 figures
          cond-mat.soft

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