Physica A: Statistical Mechanics and its Applications
Vol. 249 (1-4) (1998) pp. 184-189

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Stick-slip dynamics of interfacial friction

M. G. Rozman
Institute of Physics, Riia 142, EE2400 Tartu, Estonia
M. Urbakh and J. Klafter
School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel

We investigate a model system which consists of a chain of particles that interact with two periodic potentials representing two confining plates, one of which is externally driven. The model leads to a spectrum of rich behaviors in the motion of the top driven plate: stick-slip, intermittent kinetic regime, characterized by force fluctuations, and two types of sliding above a critical driving velocity vc. Similar behaviors are typical of a broad range of systems including thin sheared liquids. The relaxation of the "slip" part between two "stick" events in the stick-slip time series may display more than one characteristic time scale. The different relaxation times are shown to be related to a velocity-dependent effective frictional force felt by the driven plate.

©1998 Elsevier Science


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© 2001 Michael Rozman (michael.rozman@uconn.edu)
Last modified: June 12, 2001