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A Study of Factors Affecting Disc Brake Instability

[+] Author Affiliations
A. Fawzy, Y. K. Youness, A. M. A. El-Butch, I. M. Ibrahim

Helwan University, Cairo, Egypt

Paper No. ESDA2006-95651, pp. 339-347; 9 pages
  • ASME 8th Biennial Conference on Engineering Systems Design and Analysis
  • Volume 2: Automotive Systems, Bioengineering and Biomedical Technology, Fluids Engineering, Maintenance Engineering and Non-Destructive Evaluation, and Nanotechnology
  • Torino, Italy, July 4–7, 2006
  • ISBN: 0-7918-4249-5 | eISBN: 0-7918-3779-3
  • Copyright © 2006 by ASME


In this paper, the dynamic behavior of disc brake is presented considering five degrees of freedom system and a formula representing the variation of friction coefficient with applied load, temperature, velocity and design is considered. In addition, the surface distortion and roughness of the disc are assumed to vary harmonically. The influences of the Tribological properties of the pad’s friction material and the surface roughness and distortion of the disc on the system stability are studied. The effect of other parameters such as, static friction coefficient, contact stiffness and damping between pad and caliper, position of the load application by piston on the disc brake stability is also investigated and discussed. The study concluded that, disc brake vibrations can be controlled by optimizing the previously mentioned parameters. And disc surface irregularities and distortion contribute in increasing vibration levels in disc brake systems.

Copyright © 2006 by ASME



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