Coefficient of restitution of colliding viscoelastic spheres

Ramirez R, Pöschel T, Brilliantov N, Schwager T (1999)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 1999

Journal

Physical Review E American Physical Society (APS)

Book Volume: 60

Pages Range: 4465-4472

Journal Issue: 4

DOI: 10.1103/PhysRevE.60.4465

Abstract

We perform a dimension analysis for colliding viscoelastic spheres to show that the coefficient of normal restitution ε depends on the impact velocity g as ε=1-γg+γg+ ⋯, in accordance with recent findings. We develop a simple theory to find explicit expressions for coefficients γ and γ. Using these and few next expansion coefficients for ε(g) we construct a Padé approximation for this function which may be used for a wide range of impact velocities where the concept of the viscoelastic collision is valid. The obtained expression reproduces quite accurately the existing experimental dependence ε(g) for ice particles.

Authors with CRIS profile

Thorsten Pöschel Lehrstuhl für Multiscale Simulation of Particulate Systems

Involved external institutions

Universidad de Chile CL Chile (CL) Charité - Universitätsmedizin Berlin DE Germany (DE)

How to cite

APA:

Ramirez, R., Pöschel, T., Brilliantov, N., & Schwager, T. (1999). Coefficient of restitution of colliding viscoelastic spheres. Physical Review E, 60(4), 4465-4472. https://dx.doi.org/10.1103/PhysRevE.60.4465

MLA:

Ramirez, Rosa, et al. "Coefficient of restitution of colliding viscoelastic spheres." Physical Review E 60.4 (1999): 4465-4472.

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