Journal
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
Volume 46, Issue 2, Pages 191-208Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ymssp.2014.02.007
Keywords
Friction; Groove; Squeal; Vibration; Finite element; Dynamic transient analysis
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Funding
- National Natural Science Foundation of China [51375408, 51005191]
- Program for New Century Excellent Talents in University [NCET-13-0974]
- Changjiang Scholar Professorship
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An experimental and numerical study of friction-induced vibration and noise of a system composed of an elastic ball sliding over a groove-textured surface was performed. The experimental results showed that the impact between the ball and the edges of the grooves may significantly suppress the generation of high frequency components of acceleration and reduce the friction noise. Groove-textured surfaces with a specific dimensional parameter showed a good potential in reducing squeal. To model and understand this noise phenomenon, both the complex eigenvalue and dynamic transient analysis were performed. The dynamic transient analysis for the cases of groove-textured surface with/without filleted edges validated the role of the impact between the ball and the groove edges. Furthermore, a self-excited vibration model with three degrees of freedom was proposed to capture the basic features of the friction system. A small contact angle between the ball and the groove edges, corresponding to the relatively small groove width used in this study, would not cause any instability of the system. (C) 2014 Elsevier Ltd. All rights reserved.
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