NDLI: Stability and response of a self-amplified braking system under velocity-dependent actuation force

Content Provider	Springer Nature Link
Author	Chen, Li Xi, Gang
Copyright Year	2014
Abstract	Wedge brakes, featuring self-amplification, inspire good opportunity to obtain large normal force by small actuation force. A single degree of freedom torsional model with harmonic excitation for a driveline with a wedge brake is developed to investigate the effect of velocity-dependent actuation force. The stability analysis indicates that instability can occur even with a constant friction coefficient and is greatly influenced by the slope of the actuation force. Three bifurcation points are found: one stable, one unstable, and the other one Hopf. Phase portraits, time domain responses, Poincaré maps, and frequency spectra are provided by nonlinear computation. Three motions are observed: unidirectional stick-slip, bidirectional stick-slip, and non-stick-slip. Due to the self amplification, the wedge brake leads to more stick motions and more side bands compared with the conventional brake. By varying the slope, the dynamic response of the driveline can be synchronous or irregular multi-periodic motion. The dynamics at negative slope is studied further considering three other influencing factors, i.e., the initial actuation force, excitation frequency, and wedge angle. The results are provided by the comparison with those of the driveline with a conventional brake.
Starting Page	2459
Ending Page	2477
Page Count	19
File Format	PDF
ISSN	0924090X
Journal	Nonlinear Dynamics
Volume Number	78
Issue Number	4
e-ISSN	1573269X
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-08-19
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Wedge mechanism Self-amplified Braking dynamics Nonlinear Vibration, Dynamical Systems, Control Mechanics Mechanical Engineering Automotive Engineering
Content Type	Text
Resource Type	Article
Subject	Ocean Engineering Applied Mathematics Control and Systems Engineering Mechanical Engineering Electrical and Electronic Engineering Aerospace Engineering

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