Results 261 to 270 of about 19,738 (285)
Some of the next articles are maybe not open access.
Control of Stick-Slip Vibrations
2006Many technical applications are subjected to friction induced vibrations. These vibrations are mostly unwanted as they generate noise, increase wear and diminish accuracy. In this paper a feedback control is introduced that is capable to suppress these oscillations. The results are validated experimentally on a squealing brake.
Marcus Neubauer +2 more
openaire +1 more source
Analytical approximations for stick–slip vibration amplitudes
International Journal of Non-Linear Mechanics, 2003Abstract The classical “mass-on-moving-belt” model for describing friction-induced vibrations is considered, with a friction law describing friction forces that first decreases and then increases smoothly with relative interface speed. Approximate analytical expressions are derived for the conditions, the amplitudes, and the base frequencies of ...
Jon Juel Thomsen, Alexander Fidlin
openaire +1 more source
Experimental Validation of Object Positioning Via Stick–Slip Vibrations
IEEE/ASME Transactions on Mechatronics, 2014Accurate positioning of an object is important in many industrial applications. This task is usually performed using closed-loop control. Self-alignment of an object using stick-slip vibrations on a periodically excited table might be an alternative open-loop method for macro-scale applications.
van Hoof, J.A.J.M. +4 more
openaire +1 more source
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.
openaire +1 more source
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.
openaire +1 more source
Archwire vibration and stick-slip behavior at the bracket-archwire interface
American Journal of Orthodontics and Dentofacial Orthopedics, 2012It is unknown whether or not intraoral vibrations affect stick-slip behavior at orthodontic bracket-archwire interfaces. In this study, we evaluated bracket-archwire stick-slip behavior as a function of ligation method and archwire vibration.In-vivo archwire vibrations were measured to obtain frequencies and amplitudes for ex-vivo testing.
Julie E, Olson +4 more
openaire +2 more sources
Dynamics of a Simple Damped Oscillator Undergoing Stick-Slip Vibrations
Meccanica, 1999The authors study the dynamic behaviour of a simple oscillator consisting of a mass subjected to an elastic restoring force, and to viscous damping and dry friction forces arising from the contact with a moving belt. It is shown that the discontinuity of the governing equations induces non-standard bifurcations in the solutions paths of the system. The
GALVANETTO, UGO, BISHOP SR
openaire +2 more sources
An Investigation into Stick-Slip Vibrations on Vehicle/Track Systems
Vehicle System Dynamics, 1998SUMMARY A model for the numerical simulation of vehicle/track interaction and stick-slip vibration is presented. A finite element model is developed to calculate vertical contact forces. These forces are then coupled through the contact patch into a non-linear time-domain model by which the stick-slip vibration behaviour of a wheel-rail system is ...
W.X. WU +3 more
openaire +1 more source
On the Hexapod Leg Control with Nonlinear Stick-Slip Vibrations
Applied Mechanics and Materials, 2015In the paper the control problem of the six-legged walking robot is studied. In order to find the relationship between commonly used by insects gaits (trajectory of the foot point) and stable trajectory of mechanical systems, at first we analyse various previous papers and the gaits of the real insects.
Dariusz Grzelczyk +2 more
openaire +1 more source
Squeal vibrations, glass sounds, and the stick-slip effect
Canadian Journal of Physics, 2010The origin of the squeal acoustic emissions when a chalk is rubbed on a blackboard or better on a ceramic plate, and those when a wet finger is rubbed on a smooth surface, such as a glass surface, is sought in the stick-slip effect between the rubbing surfaces.
openaire +1 more source
Pattern recognition of stick-slip vibration in combined signals of DrillString vibration
Measurement, 2022Yafeng Li +4 more
openaire +1 more source