A model of a rotating railway wheel for the prediction of sound radiation
A model of a rotating railway wheel for the prediction of sound radiation
The axial symmetry of a railway wheel is taken into account to expand its vibrational response around the circumferential direction using Fourier series. This allows the vibroacoustic problem of the wheel to be formulated in a two-dimensional frame, solving for the dynamic and acoustic variables analytically in the circumferential direction. By adopting an Eulerian approach, the inertial effects associated with the rotation of the wheelset are included in the model, assuming a constant angular speed of rotation. To represent a railway wheelset, the wheel is constrained at the inner edge of the hub and the contribution of the rigid body motion of the wheelset is superimposed on its response. The latter is evaluated analytically under the assumption of small rigid body displacements. The computational efficiency of the proposed methodology is found to be three orders of magnitude greater than a full three-dimensional methodology, without compromising the accuracy. The results are compared in terms of acoustic radiation with the commercial package Ansys, showing similar sound power levels in almost all the frequency range apart from some differences at low frequencies due to the use of an acoustic model based on radiation ratios.
railway wheelset, rigid body motion, rotation, axisymmetry, rolling noise
Andrés, V.T.
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Martínez-Casas, J.
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Denia, F.D.
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Thompson, David
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22 March 2023
Andrés, V.T.
d1db6c44-bcc1-4676-bf17-51f323e54a2c
Martínez-Casas, J.
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Denia, F.D.
5a64479b-10d6-482b-8f25-dc5b4ef39780
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
Andrés, V.T., Martínez-Casas, J., Denia, F.D. and Thompson, David
(2023)
A model of a rotating railway wheel for the prediction of sound radiation.
Journal of Sound and Vibration, 553, [117667].
(doi:10.1016/j.jsv.2023.117667).
Abstract
The axial symmetry of a railway wheel is taken into account to expand its vibrational response around the circumferential direction using Fourier series. This allows the vibroacoustic problem of the wheel to be formulated in a two-dimensional frame, solving for the dynamic and acoustic variables analytically in the circumferential direction. By adopting an Eulerian approach, the inertial effects associated with the rotation of the wheelset are included in the model, assuming a constant angular speed of rotation. To represent a railway wheelset, the wheel is constrained at the inner edge of the hub and the contribution of the rigid body motion of the wheelset is superimposed on its response. The latter is evaluated analytically under the assumption of small rigid body displacements. The computational efficiency of the proposed methodology is found to be three orders of magnitude greater than a full three-dimensional methodology, without compromising the accuracy. The results are compared in terms of acoustic radiation with the commercial package Ansys, showing similar sound power levels in almost all the frequency range apart from some differences at low frequencies due to the use of an acoustic model based on radiation ratios.
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Wheel_rotation_model
- Accepted Manuscript
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1-s2.0-S0022460X23001165-main
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More information
Accepted/In Press date: 7 March 2023
e-pub ahead of print date: 10 March 2023
Published date: 22 March 2023
Keywords:
railway wheelset, rigid body motion, rotation, axisymmetry, rolling noise
Identifiers
Local EPrints ID: 477164
URI: http://eprints.soton.ac.uk/id/eprint/477164
ISSN: 0022-460X
PURE UUID: 6cca7ce9-ad26-4864-ab59-5e22659fac95
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Date deposited: 30 May 2023 17:00
Last modified: 01 Jun 2023 01:33
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Contributors
Author:
V.T. Andrés
Author:
J. Martínez-Casas
Author:
F.D. Denia
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