Complex eigenvalue analysis and dynamic transient analysis in predicting disc brake squeal

AbuBakar, Abd Rahim; Ouyang, Huajiang

doi:10.1504/ijvnv.2006.011051

Cited by 146 publications

(69 citation statements)

References 14 publications

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“…Whereas the computation of stability and steady-state oscillations is fast, temporal integration requires particular attention. Finite element models with a large number of degrees of freedom can be used (Abubakar and Ouyang [16], Massi et al [17] for instance), but in spite of numerical efforts, computation time is still an issue. The use of analytical models with a minimum number of degrees of freedom could be be a way of getting round this obstacle.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear transient vibrations and coexistences of multi-instabilities induced by friction in an aircraft braking system

Chevillot¹,

Sinou²,

Hardouin³

2009

Journal of Sound and Vibration

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Hardouin. Nonlinear transient vibrations and coexistences of multi-instabilities induced by friction in an aircraft braking system. Journal of Sound and Vibration, Elsevier, 2009, 328 (4-5) AbstractFriction-induced vibration is still a cause for concern in a wide variety of mechanical systems, because it can lead to structural damage if high vibration levels are reached. Another effect is the noise produced that can be very unpleasant for end-users, thereby making it a major problem in the field of terrestrial transport. In this work the case of an aircraft braking system is examined. An analytical model with polynomial nonlinearity in the contact between rotors and stators is considered.Stability analysis is commonly used to evaluate the capacity of a nonlinear system to generate frictioninduced vibrations. With this approach, the effects of variations in the system parameters on stability can be easily estimated. However, this technique does not give the amplitude of the vibrations produced. The integration of the full set of nonlinear dynamic equations allows computing the time-history response of the system when vibration occurs. This technique, which can be time-consuming for a model with a large number of degrees of freedom (dof), is nevertheless necessary in order to calculate the transient-state behavior of the system. The use of a Continuous Wavelet Transform (CWT) is very suitable for the detailed analysis of the transient response. In this paper, the possibilities of coexistence of several instabilities at the same time will be examined. It will be shown that the behavior of the brake can be very complex and cannot be predicted by stability analysis alone.

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Section: Introductionmentioning

confidence: 99%

Nonlinear transient vibrations and coexistences of multi-instabilities induced by friction in an aircraft braking system

Chevillot¹,

Sinou²,

Hardouin³

2009

Journal of Sound and Vibration

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“…Numerous works have analyzed the phenomenon of brake squeal, ranging from basic studies on mechanisms up to the development of suitable measurement techniques [1,2,3]. Nowadays, there is a strong research focus on numerical simulation [4,5,6,7]. Some years ago stability studies in the form of eigenvalue analysis of the linearized system became state of the art.…”

Section: Introductionmentioning

confidence: 99%

The influence of joints on friction induced vibration in brake squeal

Kruse

Tiedemann

Zeumer

et al. 2015

Journal of Sound and Vibration

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“…There are typically two different methodologies, namely, complex eigenvalue analysis and dynamic transient analysis (cf. AbuBakar and Ouyang [9]). Both are very time-consuming when used for a very large FE model, i.e.…”

Section: Discussion On the Consequences On The Finite Element Toolmentioning

confidence: 99%

“…Dynamic transient analysis is able to predict true unstable frequencies but it is very time consuming. AbuBakar and Ouyang [9] have shown that care must be taken when formulating the contact model for these two different analysis methodologies.…”

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confidence: 99%

Motion capture of a pad measured with accelerometers during squeal noise in a real brake system

Renaud

Chevallier

Dion

et al. 2012

Mechanical Systems and Signal Processing

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The operating deflection shape of a pad during squeal noise is measured on a real brake system with three-axis accelerometers. A time-frequency analysis is performed that highlights the dependency of squeal on the hydraulic pressure of the system and shows that squeal occurs simultaneously with harmonic components. The operating deflection shape of this pad before and during squeal is then visualized using interpolation, showing the predominance of bending motion. Finally, the pad motions observed are compared to the real modal basis of a detailed Finite Element model.

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Complex eigenvalue analysis and dynamic transient analysis in predicting disc brake squeal

Cited by 146 publications

References 14 publications

Nonlinear transient vibrations and coexistences of multi-instabilities induced by friction in an aircraft braking system

Nonlinear transient vibrations and coexistences of multi-instabilities induced by friction in an aircraft braking system

The influence of joints on friction induced vibration in brake squeal

Motion capture of a pad measured with accelerometers during squeal noise in a real brake system

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