Vibration energy and repeated-root modes of disc rotor for high-frequency brake squeal

Gao, P; Du, Y; Walker, PD

Vibration energy and repeated-root modes of disc rotor for high-frequency brake squeal

Gao, P

Du, Y Walker, PD

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Publication Type:: Journal Article
Citation:: Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, 2018
Issue Date:: 2018-01-01

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Field	Value	Language
dc.contributor.author	Gao, P https://orcid.org/0000-0002-6363-1681	en_US
dc.contributor.author	Du, Y	en_US
dc.contributor.author	Walker, PD https://orcid.org/0000-0003-3988-3966	en_US
dc.date.issued	2018-01-01	en_US
dc.identifier.citation	Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, 2018	en_US
dc.identifier.issn	1464-4193	en_US
dc.identifier.uri	http://hdl.handle.net/10453/131417
dc.description.abstract	© IMechE 2018. In this paper, the generation mechanism of high-frequency brake squeal is revealed from the perspective of vibration energy. Based on a closed-loop coupling model, vibration energy transfer paths at the friction coupling interface between brake pads and disc are derived. Vibration energy equilibrium analysis is used to verify the reliability and accuracy of the derivation and the presented result demonstrates that vibration energy transferred from disc rotor to pads is the dominant transfer path. It is also demonstrated that the disc rotor is the key substructure affecting high-frequency brake squeal. As the disc rotor is axisymmetric, its repeated-root modes may lead to unreasonable calculated results by using the substructure modal composition method for analyzing the brake squeal. In this study, these repeated-root modes are processed by using a modified substructure modal composition method to obtain one unique integrated substructure modal composition coefficient of each disc repeated-root modes. Finally, the presented method is applied to analyze the brake squeal in the 13 kHz frequency band. The results easily identify the key vibration modes of the disc affecting high-frequency brake squeal, verifying the reliability of the presented method.	en_US
dc.relation.ispartof	Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics	en_US
dc.relation.isbasedon	10.1177/1464419318797048	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Vibration energy and repeated-root modes of disc rotor for high-frequency brake squeal	en_US
dc.type	Journal Article
utslib.for	0913 Mechanical Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	closed_access	*
pubs.publication-status	Published	en_US

Abstract:

© IMechE 2018. In this paper, the generation mechanism of high-frequency brake squeal is revealed from the perspective of vibration energy. Based on a closed-loop coupling model, vibration energy transfer paths at the friction coupling interface between brake pads and disc are derived. Vibration energy equilibrium analysis is used to verify the reliability and accuracy of the derivation and the presented result demonstrates that vibration energy transferred from disc rotor to pads is the dominant transfer path. It is also demonstrated that the disc rotor is the key substructure affecting high-frequency brake squeal. As the disc rotor is axisymmetric, its repeated-root modes may lead to unreasonable calculated results by using the substructure modal composition method for analyzing the brake squeal. In this study, these repeated-root modes are processed by using a modified substructure modal composition method to obtain one unique integrated substructure modal composition coefficient of each disc repeated-root modes. Finally, the presented method is applied to analyze the brake squeal in the 13 kHz frequency band. The results easily identify the key vibration modes of the disc affecting high-frequency brake squeal, verifying the reliability of the presented method.

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http://hdl.handle.net/10453/131417