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Vibration and acoustic radiation of bogie area under random excitation in high-speed trains

Authors
  • Wang, Dongzhen1, 2
  • Ge, Jianmin1
  • 1 Tongji University, School of Physical Sciences and Engineering, Shanghai, 200092, China , Shanghai (China)
  • 2 CRRC Qingdao Sifang Co., Ltd, Qingdao, 266111, China , Qingdao (China)
Type
Published Article
Journal
Journal of Modern Transportation
Publisher
Springer Singapore
Publication Date
Mar 19, 2019
Volume
27
Issue
2
Pages
120–128
Identifiers
DOI: 10.1007/s40534-019-0183-4
Source
Springer Nature
Keywords
License
Green

Abstract

Based on the experiments on a platform with real vehicle structure and finite element simulation, the vibration and interior acoustic radiation under random excitations of high-speed trains’ bogie area were studied. Firstly, combined with line tests, a vehicle body with a length of 7 m was used as the research object. By comparing the results of experiment and simulation, the accuracy of the finite element model was verified. Secondly, the power spectral density curves at typical measuring points in bogie area were obtained by processing and calculating the line test data, which was measured when the vehicle ran at high speeds, and the standard vibration spectrum of the bogie area was obtained by the extreme envelope method. Furthermore, the random vibration test and simulation prediction analysis of the real vehicle structure were carried out to further verify the accuracy of the noise and vibration prediction model. Finally, according to the vibration and acoustic radiation theory, the indirect boundary element method was adopted to predict the acoustic response of the real vehicle. The analysis shows that the simulated power spectral density curves of acceleration and sound pressure level are highly consistent with the experimental ones, and the error between the simulated prediction and the experimental result is within the allowable range of 3 dB.

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