The origin of the friction between sliding bodies establishes an outstanding scientific problem. In this article, we demonstrate that the energy loss in each microscopic slip event between the bodies readily follows from the dephasing of phonons that are generated in the slip process. The dephasing mechanism directly links the typical timescales of the lattice vibrations with those of the experienced energy ‘dissipation’ and manifests itself as if the slip-induced motion were close to critically damped.

Additional Metadata
Keywords Mechanical Engineering, Mechanics of Materials, Surfaces, Coatings and Films, Surfaces and Interfaces
Publisher Springer Nature
Funder ERC , FOM-program Fundamental Aspects of Friction
Persistent URL dx.doi.org/10.1007/s11249-019-1247-7
Journal Tribology Letters
Citation
Hu, R, Krylov, S.Yu, & Frenken, J.W.M. (2020). On the Origin of Frictional Energy Dissipation. Tribology Letters, 68(8). doi:10.1007/s11249-019-1247-7