Coefficient of restitution of aspherical particles
Glielmo A, Gunkelmann N, Pöschel T (2014)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2014
Journal
Book Volume: 90
Article Number: 052204
Journal Issue: 5
DOI: 10.1103/PhysRevE.90.052204
Abstract
We consider the motion of an aspherical inelastic particle of dumbbell type bouncing repeatedly on a horizontal flat surface. The coefficient of restitution of such a particle depends not only on material properties and impact velocity but also on the angular orientation at the instant of the collision whose variance is considerable, even for small eccentricity. Assuming random angular orientation of the particle at the instant of contact we characterize the measured coefficient of restitution as a fluctuating quantity and obtain a wide probability density function including a finite probability for negative values of the coefficient of restitution. This may be understood from the partial exchange of translational and rotational kinetic energy.
Authors with CRIS profile
Nina Gunkelmann
Lehrstuhl für Multiscale Simulation of Particulate Systems
Thorsten Pöschel
Lehrstuhl für Multiscale Simulation of Particulate Systems
Additional Organisation(s)
Involved external institutions
United Kingdom (GB)How to cite
APA:
Glielmo, A., Gunkelmann, N., & Pöschel, T. (2014). Coefficient of restitution of aspherical particles. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 90(5). https://doi.org/10.1103/PhysRevE.90.052204
MLA:
Glielmo, Aldo, Nina Gunkelmann, and Thorsten Pöschel. "Coefficient of restitution of aspherical particles." Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 90.5 (2014).
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