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Friction-induced oscillations of a non-asbestos organic pin sliding on a steel disc
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).ORCID iD: 0000-0002-5259-1426
2015 (English)In: Acta Mechanica et Automatica, ISSN 1898-4088, Vol. 9, no 2, 84-88 p.Article in journal (Refereed) Published
Abstract [en]

Friction-induced oscillations result in deterioration of performance of disc brakes and are generally undesired. We conduct experimental study of friction-induced oscillations in a non-asbestos organic material/steel pair used in disc brakes of motor vehicles. The tests are done by use of a pin-on-disc machine in which the pin sample is supported on a deformable beam. The adjustable friction parameters are the disc velocity, contact pressure and temperature. The tests show that the friction coefficient decreases with the sliding velocity and increases with the temperature. The friction-induced tangential oscillation of the pin sample occurs with a frequency equal to the first natural frequency of the beam. The effects of the disc velocity and temperature on the oscillation characteristics are investigated. The oscillation amplitude increases with the disc velocity on the interval of velocities below 2 m/s. Temperature changes of several tens of degrees Celsius lead to the oscillation occurrence/decay. The obtained results can be useful for prognostication of friction-induced oscillations in disc brakes with non-asbestos organic pads.

Place, publisher, year, edition, pages
2015. Vol. 9, no 2, 84-88 p.
Keyword [en]
Friction-Induced Oscillation, Non-Asbestos Organic Material, Pin-On-Disc Machine, Sliding velocity, Temperature
National Category
URN: urn:nbn:se:kth:diva-173546DOI: 10.1515/ama-2015-0014ScopusID: 2-s2.0-84937896088OAI: diva2:853547

QC 20150914

Available from: 2015-09-14 Created: 2015-09-14 Last updated: 2015-09-14Bibliographically approved

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Nosko, Oleksii
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Machine Design (Dept.)

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