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A state-of-the-art review of curve squeal noise: phenomena, mechanisms, modelling and mitigation

A state-of-the-art review of curve squeal noise: phenomena, mechanisms, modelling and mitigation
A state-of-the-art review of curve squeal noise: phenomena, mechanisms, modelling and mitigation

Curve squeal is an intense tonal noise occurring when a rail vehicle negotiates a sharp curve. The phenomenon can be considered to be chaotic, with a widely differing likelihood of occurrence on different days or even times of day. The term curve squeal may include several different phenomena with a wide range of dominant frequencies and potentially different excitation mechanisms. This review addresses the different squeal phenomena and the approaches used to model squeal noise; both time-domain and frequency-domain approaches are discussed and compared. Supporting measurements using test rigs and field tests are also summarised. A particular aspect that is addressed is the excitation mechanism. Two mechanisms have mainly been considered in previous publications. In many early papers the squeal was supposed to be generated by the so-called falling friction characteristic in which the friction coefficient reduces with increasing sliding velocity. More recently the mode coupling mechanism has been raised as an alternative. These two mechanisms are explained and compared and the evidence for each is discussed. Finally, a short review is given of mitigation measures and some suggestions are offered for why these are not always successful.

1612-2909
3-41
Springer
Thompson, David J.
bca37fd3-d692-4779-b663-5916b01edae5
Squicciarini, G.
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Ding, B.
06d00a3c-671c-4cab-953c-b9f1c8d8eed9
Baeza, L.
09dc5565-ad4b-49af-a104-d4b6ad28e1b0
Anderson, David
Gautier, Pierre-Etienne
Iida, Masanobu
Nelson, James T.
Thompson, David J.
Tielkes, Thorsten
Towers, David A.
de Vos, Paul
Nielsen, Jens C.O.
Thompson, David J.
bca37fd3-d692-4779-b663-5916b01edae5
Squicciarini, G.
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Ding, B.
06d00a3c-671c-4cab-953c-b9f1c8d8eed9
Baeza, L.
09dc5565-ad4b-49af-a104-d4b6ad28e1b0
Anderson, David
Gautier, Pierre-Etienne
Iida, Masanobu
Nelson, James T.
Thompson, David J.
Tielkes, Thorsten
Towers, David A.
de Vos, Paul
Nielsen, Jens C.O.

Thompson, David J., Squicciarini, G., Ding, B. and Baeza, L. (2018) A state-of-the-art review of curve squeal noise: phenomena, mechanisms, modelling and mitigation. In, Anderson, David, Gautier, Pierre-Etienne, Iida, Masanobu, Nelson, James T., Thompson, David J., Tielkes, Thorsten, Towers, David A., de Vos, Paul and Nielsen, Jens C.O. (eds.) Notes on Numerical Fluid Mechanics and Multidisciplinary Design. (Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 139) Cham. Springer, pp. 3-41. (doi:10.1007/978-3-319-73411-8_1).

Record type: Book Section

Abstract

Curve squeal is an intense tonal noise occurring when a rail vehicle negotiates a sharp curve. The phenomenon can be considered to be chaotic, with a widely differing likelihood of occurrence on different days or even times of day. The term curve squeal may include several different phenomena with a wide range of dominant frequencies and potentially different excitation mechanisms. This review addresses the different squeal phenomena and the approaches used to model squeal noise; both time-domain and frequency-domain approaches are discussed and compared. Supporting measurements using test rigs and field tests are also summarised. A particular aspect that is addressed is the excitation mechanism. Two mechanisms have mainly been considered in previous publications. In many early papers the squeal was supposed to be generated by the so-called falling friction characteristic in which the friction coefficient reduces with increasing sliding velocity. More recently the mode coupling mechanism has been raised as an alternative. These two mechanisms are explained and compared and the evidence for each is discussed. Finally, a short review is given of mitigation measures and some suggestions are offered for why these are not always successful.

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P246 Thompson A state-of-the-art review of curve squeal noise FINAL - Accepted Manuscript
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e-pub ahead of print date: 20 May 2018
Published date: 2018

Identifiers

Local EPrints ID: 421407
URI: http://eprints.soton.ac.uk/id/eprint/421407
ISSN: 1612-2909
PURE UUID: 0527aac3-0847-4399-b276-59d3922829fd
ORCID for David J. Thompson: ORCID iD orcid.org/0000-0002-7964-5906
ORCID for G. Squicciarini: ORCID iD orcid.org/0000-0003-2437-6398
ORCID for L. Baeza: ORCID iD orcid.org/0000-0002-3815-8706

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Date deposited: 11 Jun 2018 16:30
Last modified: 16 Mar 2024 06:44

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Contributors

Author: G. Squicciarini ORCID iD
Author: B. Ding
Author: L. Baeza ORCID iD
Editor: David Anderson
Editor: Pierre-Etienne Gautier
Editor: Masanobu Iida
Editor: James T. Nelson
Editor: David J. Thompson
Editor: Thorsten Tielkes
Editor: David A. Towers
Editor: Paul de Vos
Editor: Jens C.O. Nielsen

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