Dynamical Friction Modeling
Author(s)
Harry Dankowicz
Abstract
A five-dimensional dynamical model of friction is proposed based on a macro-
scopic description of the interactions between nominally flat surfaces. In partic-
ular, dynamical contacts between surface in homogeneities result in coupling be-
tween the tangential motion and the separation of the surfaces and corresponding
variations in interfacial forces.
The model is shown to exhibit qualitative agreement with experimentally
observed properties of dynamical friction. For example, an apparent dependence
of the friction force on tangential velocity is deduced albeit not a priori assumed.
Moreover, hysteretic behavior in the quasi-static case due to micro-slip, as well as
in the fully dynamical case, is observed. Finally, the appearance of stick-slip os-
cillations is found to be associated with a Hopf bifurcation from the steady
Keywords
Related Book
Other papers in this volume
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