<abstract xmlns="http://www.w3.org/1999/xhtml"><p> 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.</p></abstract>

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.

Friction-Induced Oscillations of a Non-Asbestos Organic Pin Sliding on a Steel Disc

Department of Machine Design, KTH Royal Institute of Technology, Brinellvägen 83, Stockholm 100 44, Sweden

Department of Mechanical Engineering, Saitama University, 255 Shimookubo, Sakura Ward, Saitama City 338 8570, Japan

Department of Mechanical Engineering, Kyushu University, 744 Motooka, Nishi Ward, Fukuoka City 819 0395, Japan

Acta Mechanica et Automatica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Friction-induced oscillations result in deterioration of performance of disc brakes and are generally undesired. We conduct experimental study of...

Friction-Induced Oscillations of a Non-Asbestos Organic Pin Sliding on a Steel Disc

Published Online: Aug 14, 2015

Page range: 84 - 88

Received: Mar 30, 2015

Accepted: Jul 20, 2015

DOI: https://doi.org/10.1515/ama-2015-0014

Keywords
Friction-Induced Oscillation, Pin-On-Disc Machine, Non-Asbestos Organic Material, Sliding Velocity, Temperature

© Bialystok University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Friction-Induced Oscillations of a Non-Asbestos Organic Pin Sliding on a Steel Disc

Published Online: Aug 14, 2015

Page range: 84 - 88

Received: Mar 30, 2015

Accepted: Jul 20, 2015

DOI: https://doi.org/10.1515/ama-2015-0014

KeywordsFriction-Induced Oscillation, Pin-On-Disc Machine, Non-Asbestos Organic Material, Sliding Velocity, Temperature

© Bialystok University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Friction-Induced Oscillation, Pin-On-Disc Machine, Non-Asbestos Organic Material, Sliding Velocity, Temperature