Results 221 to 230 of about 14,200 (259)
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Naive model for stick-slip processes
The European Physical Journal E, 2007This paper is a tutorial description of stick-slip in soft materials (rubber beads, gels) where inertial effects are negligible. A typical example is a rubber sphere, pressed against a glass surface (JKR contact). The sphere is driven from the top at a prescribed velocity U ( approximately 100 microm/s).
F, Brochard-Wyart, P-G, de Gennes
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Stick slip, charge separation and decay
pure and applied geophysics, 1986Measurements of charge separation in rock during stable and unstable deformation give unexpectedly large decay times of 50 sec. Time-domain induced polarization experiments on wet and dry rocks give similar decay times and suggest that the same decay mechanisms operate in the induced polarization response as in the relaxation of charge generated by ...
D. A. Lockner +3 more
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Source Parameters for Stick-Slip and for Earthquakes
Science, 1973Source parameters of stick-slip friction events measured in the laboratory show particle and rupture propagation velocities which are similar to those observed for earthquakes and inferred from seismic source theory. This dynamic similarity strongly supports the idea that stick-slip is the mechanism for shallow earthquakes.
T, Johnson, F T, Wu, C H, Scholz
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Stick-slip Oscillations in Resonant Power Converters
2005 IEEE International Symposium on Circuits and Systems, 2005The paper presents evidence of the existence of stick-slip oscillations, usually found in mechanical systems with friction, in a class of resonant power converters. It is shown that these converters can exhibit periodic solutions characterized by segments of sliding motion (associated to theoretically infinitely many switchings).
DI BERNARDO, MARIO, E. Fossas
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1991
When moving slowly machines are likely to exhibit stick-slip, a periodic cycle of alternating motion and arrest. Stick-slip determines the lower performance bounds of a machine, the lowest sustainable speed and the shortest governable motion. In applications that place a premium on precise motion, an understanding of the dynamics of stick-slip and its ...
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When moving slowly machines are likely to exhibit stick-slip, a periodic cycle of alternating motion and arrest. Stick-slip determines the lower performance bounds of a machine, the lowest sustainable speed and the shortest governable motion. In applications that place a premium on precise motion, an understanding of the dynamics of stick-slip and its ...
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Self-Organized Criticality in a Stick-Slip Process
Physical Review Letters, 1991The force required to pull sandpaper across a carpet fluctuates. Slips (sudden drops of magnitude M of the force) are observed to have a probability N(Mgm)\ensuremath{\sim}${\mathit{m}}^{\mathrm{\ensuremath{-}}\mathit{b}}$ with b\ensuremath{\simeq}0.8. The power spectrum of force fluctuations has a low-frequency 1/f behavior.
, Feder, , Feder
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2010
It is known that nonlinearities in the friction-velocity curves of dry friction may lead to instability of the steady frictional sliding, namely, friction-induced vibration. The Froude pendulum and the motion of a violin string under the action of a bow are frequently used as examples of friction-induced vibration.
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It is known that nonlinearities in the friction-velocity curves of dry friction may lead to instability of the steady frictional sliding, namely, friction-induced vibration. The Froude pendulum and the motion of a violin string under the action of a bow are frequently used as examples of friction-induced vibration.
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Complimentarity Problems of Stick-Slip Vibrations
14th Biennial Conference on Mechanical Vibration and Noise: Dynamics and Vibration of Time-Varying Systems and Structures, 1993Abstract Multibody systems with many friction contacts not being decoupled by some force laws afford a special treatment with respect to the uniqueness of the solution after a contact event. This problem can be solved by an optimization techniques including unequality constraints which corresponds exactly to the physical properties of ...
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Frictional Dissipation in Stick-Slip Sliding
Physical Review Letters, 2007The time variation of the frictional force between two surfaces, undergoing stick-slip sliding across a molecularly thin film of a confined model liquid, was examined at high time and force resolution, showing clearly that dissipation of energy occurs both during the slip, and at the instant of stick (via transfer of residual momentum).
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Stick-slip response in electrorheological fluids
Physical Review E, 1993Experimental observations of stick-slip friction are reported in an electrorheological fluid. The results are consistent with shear-induced phase transitions between solid and liquid phases. During the slip, there is a liquid flowing between two columnar solid phases.
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