Coefficient of restitution for viscoelastic spheres: The effect of delayed recovery

Schwager T, Pöschel T (2008)


Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2008

Journal

Publisher: American Physical Society

Book Volume: 78

Article Number: 051304

Journal Issue: 5

DOI: 10.1103/PhysRevE.78.051304

Abstract

The coefficient of normal restitution of colliding viscoelastic spheres is computed as a function of the material properties and the impact velocity. From simple arguments it becomes clear that, in a collision of purely repulsively interacting particles, the particles lose contact slightly before the distance of the centers of the spheres reaches the sum of the radii, that is, the particles recover their shape only after they lose contact with their collision partner. This effect was neglected in earlier calculations, which leads erroneously to attractive forces and thus to an underestimation of the coefficient of restitution. As a result we find a different dependence of the coefficient of restitution on the impact rate. © 2008 The American Physical Society.

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APA:

Schwager, T., & Pöschel, T. (2008). Coefficient of restitution for viscoelastic spheres: The effect of delayed recovery. Physical Review E, 78(5). https://dx.doi.org/10.1103/PhysRevE.78.051304

MLA:

Schwager, Thomas, and Thorsten Pöschel. "Coefficient of restitution for viscoelastic spheres: The effect of delayed recovery." Physical Review E 78.5 (2008).

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