Liquefaction of a Horizontally Vibrated Granular Bed: Friction, Dilation and Segregation

Details Liquefaction of a Horizontally Vibrated Granular Bed: Friction, Dilation and Segregation Liquefaction of a Horizontally Vibrated Granular Bed: Friction, Dilation and Segregation

1997-04-09

arxiv.org/abs/patt-sol/9704001v1

Nonlinear Sciences

Pattern Formation and Solitons

11 pages, 4 Postscript figures

Scientific paper

We present experimental observations of the onset of flow (liquefaction) for horizontally vibrated granular materials. As the acceleration increases above certain value, the top layer of granular material liquefies, while the remainder of the layer moves with the shaker in solid body motion. With increasing acceleration, more of the layer becomes fluidized. The initial bifurcation is backward, and the amount of hysteresis depends mainly on frictional properties of the granular media. A small amount of fluidization by gas flow lifts the hysteresis. Modest differences in the frictional properties of otherwise identical particles leads to rapid segregation.

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