Vibrational Instability Analysis for Railway Brake System Equipped with Flexible Pad Structure

Kim, Kwanju; Yoo, Namsik; Lee, Eunseok

doi:10.1007/s12239-022-0098-7

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…The findings highlight a substantial influence of these supplementary masses on the propensity for squealing across various modes. In a related study, Kwanju, K. et al 6 examined the characteristics of squeal noise in a brake system featuring a flexible pad, focusing on its application within a high-speed railway context. Utilizing finite element analysis, a complex eigenvalue assessment of a disc brake system is performed to identify its unstable modes.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of brake squeal noise – Application to the disk brake systems

Bouazizi,

Soula,

Lazghab

2024

Noise & Vibration Worldwide

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Exploring Noise Reduction in Automotive Disc Brake Systems: Investigating the Impact of Viscoelastic Core Sandwich Plates. This study delves into the phenomenon of brake squeal noise generated by automotive disc brake systems. It focuses on analyzing the response of sandwich plates with viscoelastic cores, which are employed within brake systems to mitigate squeal noise arising from friction between brake pads and the brake disk. Through a series of finite element analyses conducted under varying operational conditions, including friction coefficient and angular velocity, the research aims to ascertain the complex eigenvalue of the disc brake system in order to identify unstable modes. The findings underscore that the incorporation of viscoelastic layers within preloaded, slender sandwich plates introduces nonlinear dynamic characteristics that contribute to the reduction of squeal noise within braking systems.

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Section: Introductionmentioning

confidence: 99%

Numerical analysis of brake squeal noise – Application to the disk brake systems

Bouazizi,

Soula,

Lazghab

2024

Noise & Vibration Worldwide

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“…contact pressure, contact area, temperature and the friction coefficient [6]. Finite element method and complex modal analysis are used to investigate the issue and predict the unstable vibrational modes [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Troubleshooting Noise and Vibration Issues of a Metro Braking System

Megna

Bracciali

2023

J. Vib. Eng. Technol.

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Purpose The braking system used on a recently upgraded metro vehicle showed very high low-frequency noise and vibrations levels in service affecting passengers’ comfort and leading to both brake calliper lever failures and to premature wear of brake pads. The characteristics of the phenomenon were such that it was classified as a groan noise type. As brake pads with different characteristics were tested trying to attenuate the issue without success, the paper describes the approach adopted by the authors to tackle the issue. Methods The dynamic behaviour of all the components involved during the braking phase (wheelset, callipers, brake discs and part of the bogie frame) was analysed by numerical simulations and tests during service, finding a coincidence of the natural frequencies of the wheelset and the brake support. As this resonance was believed to be the root cause of the problem, a number of structural modifications were proposed. Results and Conclusions After a careful selection process that included robustness and sensitivity analyses, the accepted modification proved to be effective in solving the issue and was applied with satisfaction to the whole fleet.

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Modification of friction block connection for improving the tribological behavior of high-speed train braking interface

Zhang,

Xiang

et al. 2024

Engineering Failure Analysis

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Vibrational Instability Analysis for Railway Brake System Equipped with Flexible Pad Structure

Cited by 4 publications

References 24 publications

Numerical analysis of brake squeal noise – Application to the disk brake systems

Numerical analysis of brake squeal noise – Application to the disk brake systems

Troubleshooting Noise and Vibration Issues of a Metro Braking System

Modification of friction block connection for improving the tribological behavior of high-speed train braking interface

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