Transition from Uniform Motion to Stick-Slip in the Rice-Ruina Model of One and Two Blocks

Nonlinear Sciences – Exactly Solvable and Integrable Systems

Scientific paper

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8 pages, 2 figures, presented at 17th Marian Smoluchowski Symposium on Statistical Physics: Fundamentals and Applications, Zak

Scientific paper

We analyze the Rice-Ruina state and rate dependent friction model. The system consists of one or two blocks driven by springs with constant velocity on a dry, rough surface. Our discussion is limited to the creep-like motion, when the driving velocity is small. Two regimes of motion are observed: stick-slip and steady sliding. The stability of the steady sliding depends on the model parameters. Numerical and analytical results show a transition between two regimes: the system passes directly from uniform to stick-slip motion. The calculations are performed also for two driven blocks. Then, the transition has the same character and it appears at the same point.

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