Complex structured polymer concrete sleeper for rolling noise reduction of high-speed train system

This work contains the results of a research of the dynamic processes in the “bridge-train” system while passenger trains move over a bridge structure (overpass) in high-speed. The article presents the methodology of mathematic modelling, and the basic differential equations of the studied system elements motion are provided. Also there is a description of dynamic interaction of the bridge-train system numerical model based on the FEM. In general, taking into account in the design scheme of the “bridge” system not only spans, but also piers with a foundation, it is possible to more accurately determine the values of the bridge natural frequencies, which is a key factor in assessing the dynamic response of a structure when passing a high-speed train.

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Simulation Analysis on Noise Reduction Effect of Sound Barriers with Different Geometric Shapes for High-Speed Train

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/612/5/052038 ◽

2019 ◽

Vol 612 ◽

pp. 052038

Author(s):

Gengfei Liu ◽

Ruxiao Wang ◽

Xiaori Liu ◽

Su Li ◽

Chang Tong

Keyword(s):

Noise Reduction ◽

High Speed ◽

Simulation Analysis ◽

High Speed Train ◽

Geometric Shapes ◽

Sound Barriers ◽

Reduction Effect

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High speed train noise emission: Latest investigation of the aerodynamic/rolling noise contribution

Journal of Sound and Vibration ◽

10.1016/j.jsv.2005.08.069 ◽

2006 ◽

Vol 293 (3-5) ◽

pp. 535-546 ◽

Cited By ~ 102

Author(s):

C. Mellet ◽

F. Létourneaux ◽

F. Poisson ◽

C. Talotte

Keyword(s):

High Speed ◽

High Speed Train ◽

Noise Emission ◽

Rolling Noise ◽

Noise Contribution

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Research on Aerodynamic Noise Reduction for High-Speed Trains

Shock and Vibration ◽

10.1155/2016/6031893 ◽

2016 ◽

Vol 2016 ◽

pp. 1-21 ◽

Cited By ~ 7

Author(s):

Yadong Zhang ◽

Jiye Zhang ◽

Tian Li ◽

Liang Zhang ◽

Weihua Zhang

Keyword(s):

Noise Reduction ◽

High Speed ◽

Low Noise ◽

Broadband Noise ◽

Full Scale ◽

Noise Model ◽

Aerodynamic Noise ◽

High Speed Train ◽

Detached Eddy Simulation ◽

Noise Sources

A broadband noise source model based on Lighthill’s acoustic theory was used to perform numerical simulations of the aerodynamic noise sources for a high-speed train. The near-field unsteady flow around a high-speed train was analysed based on a delayed detached-eddy simulation (DDES) using the finite volume method with high-order difference schemes. The far-field aerodynamic noise from a high-speed train was predicted using a computational fluid dynamics (CFD)/Ffowcs Williams-Hawkings (FW-H) acoustic analogy. An analysis of noise reduction methods based on the main noise sources was performed. An aerodynamic noise model for a full-scale high-speed train, including three coaches with six bogies, two inter-coach spacings, two windscreen wipers, and two pantographs, was established. Several low-noise design improvements for the high-speed train were identified, based primarily on the main noise sources; these improvements included the choice of the knuckle-downstream or knuckle-upstream pantograph orientation as well as different pantograph fairing structures, pantograph fairing installation positions, pantograph lifting configurations, inter-coach spacings, and bogie skirt boards. Based on the analysis, we designed a low-noise structure for a full-scale high-speed train with an average sound pressure level (SPL) 3.2 dB(A) lower than that of the original train. Thus, the noise reduction design goal was achieved. In addition, the accuracy of the aerodynamic noise calculation method was demonstrated via experimental wind tunnel tests.

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