Abstract:

Friction is a function of both the interface properties and dynamic response of a friction pair. The true contact area and thus the total time-dependent friction and normal forces change as a result of the relative motion of the surfaces with respect to each other. Friction in a dynamic system has the dual role of both exciting vibrations as well as dissipating vibratory energy. In this presentation, mechanisms by which friction induces vibrations in dynamic systems are reviewed and the fundamental issues involved in friction force modeling are discussed.