Influence of dynamic vibration absorber beneath rail base on rail vibration and noise

被引：0
|
作者：
Yang X. [1 ,2 ]
Zhao Z. [1 ,2 ]
Qian D. [1 ,2 ]
Zhang Z. [1 ,2 ]
机构：
[1] Shanghai Key Laboratory of Rail Infrastructure Durability and System Safety (Tongji University), Shanghai
[2] Key Laboratory of Road and Traffic Engineering of Ministry of Education (Tongji University), Shanghai
来源：
Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology | 2021年 / 53卷 / 03期
关键词：
Dynamic vibration absorber; High-speed railway; Noise; Rail; Vibration;
D O I：
10.11918/202007094
中图分类号：
学科分类号：
摘要：
To analyze the influence of dynamic vibration absorber beneath rail base on the sound radiation characteristics of the rail, a vibration-acoustic radiation model for rails was established. First, three-dimensional solid finite element model was established according to the actual topological structure of the railway slab track, and the eigenvalue problem of the rail structure was solved by the direct method. Next, the admittance characteristics of the rail and the decay rate on the track under vertical unit force excitation were calculated and analyzed. Then, the wheel-rail rolling noise prediction model was used to calculate and analyze the influence of rail vibration absorber on the sound radiation power of the rail. Finally, the influence of the parameters of dynamic vibration absorber beneath rail base was analyzed. Results show that the vibration reduction effects of the dynamic vibration absorber beneath rail base were at the frequency band of 750 Hz to 1 650 Hz, and the noise reduction was above 800 Hz. The larger the mass ratio of vibration absorber was, the higher the level of vibration reduction and noise reduction was, while the lower the efficiency improvement of vibration reduction and noise reduction was. Increasing the stiffness of the vibration absorber in a certain range could slightly improve the noise reduction level, whereas too large stiffness could aggravate rail vibration response and its longitudinal propagation. The damping coefficient could affect the frequency bandwidth of vibration reduction and noise reduction, so it needs to be large enough to match the mass and stiffness of the vibration absorber. The calculation and analysis in this paper can provide certain reference for the parameters design of rail dynamic vibration absorbers and the selection of low-noise rails. Copyright ©2021 Journal of Harbin Institute of Technology.All rights reserved.
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页码：42 / 50
页数：8
相关论文
共 18 条
  • [1] HOU Qiaosheng, Wheel-rail vibration characteristics research of metro vibration-reduction tracks, (2014)
  • [2] XU Zhisheng, ZHAI Wanming, Mechanism of wheel/rail noise for rail transit, Noise and Vibration Control, 1, (2006)
  • [3] ZHANG Pengcheng, WANG Yu, ZENG Zhongyi, Measures classified comparison in vibration and noise control of urban rail traffic, Science & Technology Information, 26, (2013)
  • [4] FODIMAN P., Line test validation of low noise railway components, Proceedings of World Congress on Railway Research, (1996)
  • [5] MAES J, SOL H., A double tuned rail damper: increased damping at the two first pinned-pinned frequencies, Journal of Sound and Vibration, 267, 3, (2003)
  • [6] THOMPSON D J, JONES C J C, WATERS T P, Et al., A tuned damping device for reducing noise from railway track, Applied Acoustics, 68, 1, (2007)
  • [7] JIANG Weikang, WAN Quan, YAN Li, Et al., Research and application of restrained damping rail vibration absorber technology in rail transit, Journal of Vibration and Shock, 8, 10, (2009)
  • [8] GUAN Jingyan, Research on rail dynamic vibration absorber and its applications of urban rail transit, (2009)
  • [9] WU T X., On the railway track dynamics with rail vibration absorber for noise reduction, Journal of Sound & Vibration, 309, 3, (2008)
  • [10] LIU H P, WU T X, LI Z G., Theoretical modelling and effectiveness study of rail vibration absorber for noise control, Journal of Sound & Vibration, 323, 3, (2009)
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