A discussion on present theories of rubber friction, with particular reference to different possible choices of arbitrary roughness cutoff parameters

Andrea Genovese, Flavio Farroni, Antonio Papangelo & Michele Ciavarella
Since the early study by Grosch in 1963 it has been known that rubber friction shows generally two maxima with respect to speed - the first one attributed to adhesion, and another at higher velocities attributed to viscoelastic losses. The theory of Klüppel and Heinrich and that of Persson suggests that viscoelastic losses crucially depend on the “multiscale” aspect of roughness and in particular on truncation at fine scales. In this study, we comment a...
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