Abstract
This paper deals with sliding friction between two rough macroscopic solids in contact, without any lubricant — i.e. dry friction. The dynamical properties of such a system are of considerable interest when dealing with precision tooling or earthquakes mechanics, for instance; despite of this fact, little experimental study has been performed so far. Using a non standard tribological material — viz. Bristol board — displaying unusually reproducible behaviour, made it possible to explore the dynamical phase diagram by systematically varying the relevant control parameters (driving velocity, slider mass and loading machine stiffness). The results strongly support the Bowden & Tabor approach based on plastic deformation and creep relaxation of interlocked asperities with sizes are of micrometric order. In this spirit, and borrowing from the former model of Rice & Ruina, prevailing in rock mechanics, we have proposed a phenomenological model of creep motion which is found to provide a very good quantitative description of the low-velocity dynamics. When increasing the driving velocity, the system crosses-over to an inertia-controlled regime which might provide an experimental paradigm for further improvements of the theory.
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© 1996 Springer Science+Business Media Dordrecht
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Baumberger, T. (1996). Dry Friction Dynamics at Low Velocities. In: Persson, B.N.J., Tosatti, E. (eds) Physics of Sliding Friction. NATO ASI Series, vol 311. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-8705-1_1
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DOI: https://doi.org/10.1007/978-94-015-8705-1_1
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