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Article type: Research Article
Authors: Collette, C.
Affiliations: Department of Mechanical Engineering and Robotics, University of Brussels, Brussels, Belgium
Note: [] Address for correspondence: Department of Mechanical Engineering and Robotics, University of Brussels, 50 av. F.D. Roosevlet, 1050 Brussels, Belgium. Tel.: +32 2 650 46 62; Fax: +32 2 650 46 60; E-mail: Christophe.Collette@ulb.ac.be
Abstract: This paper investigates the influence of the wheel vertical dynamics in the mechanism of squeal noise on a scaled test bench. To this purpose, sustained oscillations are first studied on a single degree of freedom oscillator, considering both a decreasing slope of the friction curve and a vertical excitation. Their relative importance to sustain the oscillations is discussed. Then, a mathematical model of a quarter scale test bench is developed in the frequency domain. Using this model, it is shown that the squeal noise resulting from the excitation of the bending modes of the wheel is sustained because these bending modes are associated with variations of the vertical contact force. Results are further confirmed by experiments conducted on a scaled test bench.
Keywords: Squeal noise, scaled test bench, forced and self excited vibrations
DOI: 10.3233/SAV-2011-0620
Journal: Shock and Vibration, vol. 19, no. 2, pp. 141-149, 2012
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