Squeal noise generated by railway disc brakes: Experiments and stability computations on large industrial models

Chiello, Olivier; Sinou, Jean-Jacques; Vincent, Nicolas; Roches, Guillaume Vermot Des; Cocheteux, Franck; Bellaj, Sélim; Lorang, Xavier

doi:10.1121/1.4806160

Cited by 10 publications

(6 citation statements)

References 5 publications

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“…Even though the amount of research on prediction and suppression of the squeal noise has been steadily increasing, 29,30 most of it has been focused on the automobile industry; brake noise in the railway field has rarely been addressed in the available literature. One noticeable case is the discussion of squeal instability on the brake systems of the French highspeed trains (train a`grande vitesse [TGV]) reported by Sinou et al 31 and Chiello et al 32 They designed specific experimental setups that can simulate real TGV brake systems and conducted a series of braking tests, including transient-and drag-type tests. The acquired data were used to discuss and validate their proposed numerical strategy.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of the squeal characteristics in railway disc brakes

Tang

Zhang

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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In this study, a bespoke small-scale brake dynamometer was developed to simulate the braking conditions of a railway disc brake system. Braking squeal experiments were performed with this brake dynamometer at different braking pressures and disc rotation speeds, and the influence of these braking parameters on the generation and characterization of the squeal noise was evaluated and discussed. The obtained results show that both the braking pressure and the disc rotation speed have a significant influence on the generation and evolution of the squeal noise. Higher rotation speeds are found to result in higher sound pressures and more complicated squeal noise spectra, except at a particular braking pressure, for which the highest sound pressure level is found at various disc rotation speeds. This phenomenon indicates that a combination of specific braking parameters may lead to a strong instability of the brake system and consequently to squeal noise. Additionally, a possible correlation of the squeal noise characteristics with the pressure distribution at the braking interface was found and discussed.

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Section: Introductionmentioning

confidence: 99%

“…31 and Chiello et al. 32 They designed specific experimental setups that can simulate real TGV brake systems and conducted a series of braking tests, including transient- and drag-type tests. The acquired data were used to discuss and validate their proposed numerical strategy.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the squeal characteristics in railway disc brakes

Tang

Zhang

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Among all different transportation vehicles, trains are the ones with the highest levels of noise at those frequencies, where human hearing sensitivity has a low audibility threshold and the annoyance is greater [3]. In particular, the most annoying noise produced is the train brake noise (TBN), an unpleasant noise that typically ranges from 2.0 to 4.5 kHz as several studies have proved [4][5][6][7][8]. More precisely, Chiello et al [4] and Cascetta et al [5] analysed different models of disc brakes in numerical and laboratory studies, while Jansen et al [6] and Lázaro et al [7] measured some trains braking in railways at different velocities.…”

Section: Introductionmentioning

confidence: 99%

Sonic Crystal Noise Barrier with Resonant Cavities for Train Brake Noise Mitigation

Ramírez-Solana,

Galiana-Nieves,

Picó

et al. 2024

Applied Sciences

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In an experimental investigation, the development of sonic crystal noise barriers (SCNBs) is undertaken to address the issue of train brake noise (TBN), focusing on the use of local resonances in scatterers of sonic crystals. Recent research has shown that the inclusion of cavity resonators in the crystal scatterers allows for the modification of their insulating properties. In those works, it has been demonstrated that this interaction can be used to build highly insulating structures. The study proposes an SCNB design that includes a resonant cavity specifically to mitigate TBN and validates this design through experimental measures. The experiments confirm the enhanced sound insulation capabilities of SCNBs, compare them to the conventional noise barriers ones and demonstrate the applicability and effectiveness of the proposed design in real-world scenarios.

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“…[3][4][5][6][7][8] However, to date, most studies on brake squeal have been conducted in the automotive field and train-related brake squeal has rarely been investigated. 1,2,9 Sinou et al 1 performed a study on the brake squeal of high-speed trains; their results showed that it was possible to develop consistent and efficient finite element (FE) models to simulate squeal in train a`grande vitesse (French: high-speed train (TGV)) brake systems. However, considering the high speed and complex working conditions of high-speed trains during the brake process, details regarding the generation and evolution of brake squeal remain unknown.…”

Section: Introductionmentioning

confidence: 99%

Tribological and dynamical analysis of a brake pad with multiple blocks for a high-speed train

Tang

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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In this research, the tribological and dynamical characteristics of a brake pad with multiple blocks are investigated using experimental and numerical methods. A dynamometer with a multiblock brake pad configuration on a brake disc is developed and a series of drag-type tests are conducted to study the brake squeal and wear behavior of a high-speed train brake system. Finite element analysis is performed to derive physical explanations for the observed experimental phenomena. The experimental and numerical results show that the rotational speed and braking force have important influences on the brake squeal; the trends of the multiblock and single-block systems are different. In the multiblock brake pad, the different blocks exhibit significantly different magnitudes of contact stresses and vibration accelerations. The blocks located in the inner and outer rings have higher vibration acceleration amplitudes and stronger vibration energies than the blocks located in the middle ring.

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Squeal noise generated by railway disc brakes: Experiments and stability computations on large industrial models

Cited by 10 publications

References 5 publications

Experimental investigation of the squeal characteristics in railway disc brakes

Experimental investigation of the squeal characteristics in railway disc brakes

Sonic Crystal Noise Barrier with Resonant Cavities for Train Brake Noise Mitigation

Tribological and dynamical analysis of a brake pad with multiple blocks for a high-speed train

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