Journal ArticleDOI
A predictive tool to evaluate disc brake squeal propensity Part 2: System linearisation and modal analysis
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TLDR
In this paper, the authors describe an integrated theoretical approach to the analysis of disc brake squeal and propose a mechanism that gives rise to the unstable squeal vibration, which is defined by a single indicator derived from the system eigenvalues.Abstract:
This paper is the second in a series of three that together describe an integrated theoretical approach to the analysis of disc brake squeal. Within this paper the specific problems of system linearisation and complex modal analysis are addressed. The likelihood of squeal noise occurrence is quantified by the definition of a single indicator derived from the system eigenvalues. Mode shape analysis permits study of the motion linked to each mode and a technique is presented that reconstructs a true picture of the complex mode through the combination of its real and imaginary components. Typical results are presented for stable and unstable modes of vibration which lead to the proposal of a mechanism that gives rise to the unstable squeal vibration.read more
Citations
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Journal ArticleDOI
Brake comfort – a review
TL;DR: In this article, a review of state-of-the-art studies on brake vibration and noise is presented, focusing on the still-open questions that appear crucial from the perspective of a leading brake manufacturer.
Journal ArticleDOI
Instabilities generated by friction in a pad–disc system during the braking process
TL;DR: In this paper, the authors present a numerical and experimental study of a pad-disc tribometer and show that the acceleration spectrum recorded on the surface of the pad reveals periodicity in the frequency domain.
Editorial board member
TL;DR: Results indicate that the proposed automation method for automatic evaluation of some important measures of risk management can increase the accuracy of the assessment while it is optimizing the time and avoiding human errors.
Journal ArticleDOI
Sensitivity studies of friction-induced vibration
Tore Butlin,Jim Woodhouse +1 more
TL;DR: In this paper, a model with two linear systems coupled at a single-point sliding contact where a general linearised model for dynamic frictional force is allowed is used to examine the origin of the sensitivity of friction-induced vibration.
Proceedings ArticleDOI
Drum Brake Contact Analysis and its Influence on Squeal Noise Prediction
TL;DR: In this article, a non-linear contact analysis of a leading-trailing shoe drum brake is presented using the finite element method, which accurately captures both the static and pseudo-dynamic behaviour at the friction interface.
References
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Journal ArticleDOI
The Lanczos algorithm applied to unsymmetric generalized eigenvalue problem
C. Rajakumar,C. R. Rogers +1 more
TL;DR: Application of the two-sided Lanczos recursion to the unsymmetric generalized eigenvalue problem is presented and the results are compared with the eigenfrequencies extracted by an unsyMMetric subspace iteration procedure presented in the literature.
Journal ArticleDOI
A predictive tool to evaluate disc brake squeal propensity. Part 1: The model philosophy and the contact problem
TL;DR: In this article, the authors describe an integrated approach to the analysis of disc brake squeal, based on the use of a parametric finite element representation of the disc-pad assembly.