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arXiv · 1104.0049

Coefficient of Restitution as a Fluctuating Quantity

Marina Montaine·Michael Heckel·Christof Kruelle·Thomas Schwager·Thorsten Poeschel
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Abstract

The coefficient of restitution of a spherical particle in contact with a flat plate is investigated as a function of the impact velocity. As an experimental observation we notice non-trivial (non-Gaussian) fluctuations of the measured values. For a fixed impact velocity, the probability density of the coefficient of restitution, $p(ε)$, is formed by two exponential functions (one increasing, one decreasing) of different slope. This behavior may be explained by a certain roughness of the particle which leads to energy transfer between the linear and rotational degrees of freedom.

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Marina Montaine, Michael Heckel, Christof Kruelle, Thomas Schwager, Thorsten Poeschel. 2011-03-31. Coefficient of Restitution as a Fluctuating Quantity. https://doi.org/10.1103/physreve.84.041306

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