Abstract:
We present series of experiments on the resistance force encountered by a bottom piston pushing a vertical granular column confined in a two-dimensional cell. We show that, due to the presence of friction at the boundaries and between the grains, the signal shows many complex features. At slow driving velocities, we observe a transition to a stick-slip dynamic instability. Depending on the granular material used, the elementary stick-slip events may either be well characterized or largely distributed. We present a statistical study on the waiting time between events and the distribution of energy release as a function of the spring stiffness and the driving velocity.
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Received 5 August 1998 and Received in final form 22 October 1998
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Kolb, E., Mazozi, T., Clément, E. et al. Force fluctuations in a vertically pushed granular column. Eur. Phys. J. B 8, 483–491 (1999). https://doi.org/10.1007/s100510050715
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DOI: https://doi.org/10.1007/s100510050715