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Theoretical Analysis of Wheel/Rail Rolling Noise for High-Speed Trains

Author: LiuLinYa
Tutor: LeiXiaoYan
School: East China Jiaotong University
Course: Structural Engineering
Keywords: High-speed train Wheel-rail rolling noise Wheel-rail interaction
CLC: U270.16
Type: Master's thesis
Year: 2003
Downloads: 329
Quote: 2
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Abstract


Progress of modern society , economic development and people's living standards improve and put forward higher requirements on the quality of transportation ( fast, safe , and comfortable ) , in order to meet this demand , China 's railways continue to speed , but the resulting noise pollution problem has become increasingly severe . For the purpose of this paper to control the high-speed train noise around the high-speed train wheel-rail rolling noise generation mechanism to expand the following research . 1 , according to the basic relationship of the wheel-rail interaction , study the coupled vibration of the wheel-rail wheel and rail surface irregularity excitation , considering the wheel-rail contact patch filter characteristics derived wheel the radial vibration average power spectrum and rail vertical vibration average analytic expression of the power spectrum of the theory . 2 , the rail is considered to be infinitely long beam supported on a continuous elastic foundation , wheels simplify the Car Wheel stiffness into account elastic rings, established the analytical expressions of the wheel and rail vertical impedance . 3 , on the basis of the wheel-rail coupling vibration analysis , based on the theory of structural acoustic radiation , does not consider the effects of earth reflectivity railway wheel-rail rolling noise sound pressure level spectrum is derived theoretical expressions . 4 using the experimental data given in the literature , to verify that the wheel-rail rolling noise prediction model , the theoretical predictions and our existing line of wheel-rail noise , the theory predicts the results compared with the field test results . The calculation results show that the wheel-rail rolling noise , rail - radiated noise in 2000HZ band dominated bands in the above 2000HZ wheel radiated noise dominates . Thesis focuses on the problem of noise pollution in China 's railway speed , close combination of the urgent need to address the important issue of the railway speed and rapid railway construction to commence a study , involving a wide range of knowledge , there is a larger theoretical depth and difficulty to research innovative , and important practical applications of significance , and laid the foundation for future high-speed train wheel-rail rolling noise control problem further in-depth study of .

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CLC: > Transportation > Rail transport > Vehicle Engineering > General issues > Vehicle theory and experiment > Vehicle noise and to prevent
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