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arXiv · 1312.0449

Rheology of Weakly Vibrated Granular Media

Geert H. Wortel·Joshua A. Dijksman·Martin van Hecke
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Abstract

We probe the rheology of weakly vibrated granular flows as function of flow rate, vibration strength and pressure by performing experiments in a vertically vibrated split-bottom shear cell. For slow flows, we establish the existence of a novel vibration dominated granular flow regime, where the driving stresses smoothly vanish as the driving rate is diminished. We distinguish three qualitatively different vibration dominated rheologies, most strikingly a regime where the shear stresses no longer are proportional to the pressure.

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Geert H. Wortel, Joshua A. Dijksman, Martin van Hecke. 2013-12-02. Rheology of Weakly Vibrated Granular Media. https://doi.org/10.1103/physreve.89.012202

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