Analysis of Vibration and Sound Radiation Characteristics of Resilient Wheel in Metro
American Journal of Mechanical and Industrial Engineering
Volume 3, Issue 4, July 2018, Pages: 55-63
Received: Jul. 17, 2018; Accepted: Aug. 6, 2018; Published: Sep. 15, 2018
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Authors
Jianhui Tian, CAE Analysis Room for Engineering Application, School of Mechatronic Engineering, Xi'an Technological University, Xi'an, China
Ke Wang, CAE Analysis Room for Engineering Application, School of Mechatronic Engineering, Xi'an Technological University, Xi'an, China
Kan Xiao, CAE Analysis Room for Engineering Application, School of Mechatronic Engineering, Xi'an Technological University, Xi'an, China
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Abstract
The wheel of vehicles is not pure rolling on the rail for the track irregularity, but with a small vertical and horizontal relative displacement. The relative displacement produces the wheel rail force and causes the vibration of the wheel and rail, which is transmitted to the air and produces noise. Therefore, it is of great significance to study the wheel's vibration and sound radiation under the track irregularity conditions. In this paper, the wheel-rail coupling dynamic analysis model of metro vehicle was established by using UM software and was researched by numerical calculation method, the wheel-rail contact force under irregularity excitation was obtained. Then the acoustic calculation model of the rigid wheel and the resilient wheel was established. Combined with the structural finite element method and the acoustic boundary element method, the structural response obtained by transient dynamic analysis was used as the boundary condition to study the acoustic radiation characteristics and the noise reduction effect of the resilient wheel. The study results show that under the vertical excitation of wheel-rail, compared with rigid wheel, the use of resilient wheel can inhibit the vibration for rim, tread and web. The vibration acceleration attenuation of the web is most significant, from 97m/s2 to 58m/s2. It is because of the vibration reduction function of the rubber body for the resilient wheel. The sound power level of the resilient wheel has a slight increase in the low frequency range and has a slight decrease in the high frequency range, in the whole calculated frequency range the sound power level of the resilient wheel decreases by 10.1 dB. These provide a good reference for the resilient wheel application in metro vehicle.
Keywords
Resilient Wheel, Track Irregularity, Dynamic, Vibration, Sound Radiation
To cite this article
Jianhui Tian, Ke Wang, Kan Xiao, Analysis of Vibration and Sound Radiation Characteristics of Resilient Wheel in Metro, American Journal of Mechanical and Industrial Engineering. Vol. 3, No. 4, 2018, pp. 55-63. doi: 10.11648/j.ajmie.20180304.13
Copyright
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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