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arXiv · 1106.2849

Jamming, Yielding and Rheology of Weakly Vibrated Granular Media

J. A. Dijksman·G. H. Wortel·L. T. H. van Dellen·O. Dauchot·M. van Hecke
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Abstract

We establish that the rheological curve of dry granular media is non-monotonic, both in the presence and absence of external mechanical agitations. In the presence of weak vibrations, the non-monotonic flow curves govern a hysteretic transition between slow but steady and fast, inertial flows. In the absence of vibrations, the non-monotonic flow curve governs the yielding behavior of granular media. Finally, we show that non-monotonic flow curves can be seen in at least two different flow geometries and for several granular materials.

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J. A. Dijksman, G. H. Wortel, L. T. H. van Dellen, O. Dauchot, M. van Hecke. 2011-07-17. Jamming, Yielding and Rheology of Weakly Vibrated Granular Media. https://doi.org/10.1103/physrevlett.107.108303

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