Wave pattern motion and stick–slip limit cycle oscillation of a disc brake

• Published in: Journal of sound and vibration Vol. 325; no. 3; pp. 552 - 564
• Main Authors: Kang, Jaeyoung, Krousgrill, Charles M., Sadeghi, Farshid
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 21.08.2009; Elsevier
• Subjects: Acoustics; Applied sciences; Drives; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Mechanical contact (friction...); Mechanical engineering. Machine design; Physics; Shafts, couplings, clutches, brakes; Solid mechanics; Structural acoustics and vibration; Structural and continuum mechanics; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...); Disk brake; Vibration; Mechanical contact; Stationary condition; Friction; Stick slip; Contact stress; Rotating disk; Squealing; Flutter; Non linear effect; High frequency; Limit cycle; Standing wave
• ISSN: 0022-460X; 1095-8568
• DOI: 10.1016/j.jsv.2009.03.030

This paper examines the dynamic response of a rotating squealing disc brake subject to distributed nonlinear contact stresses where two brake pads are assumed to be stationary and rigid. The friction stresses produce high-frequency vibrations that exhibit standing or traveling waves on the disc surface. The wave pattern resulting from the binary flutter mechanism of one transverse doublet mode pair is studied here. The results show that the wave pattern is associated with mode-coupling character. For a steady-squealing mode, the stick zone of the contact area is determined by a smooth friction–velocity curve having both negative and positive slopes.