Numerical and analytical models for high speed train pantograph radiated noise prediction

2008 ◽  
Vol 123 (5) ◽  
pp. 3259-3259
Author(s):  
Massimo Viscardi ◽  
Michele Iadevaia ◽  
Salvatore Melchionna ◽  
Leonardo Lecce
Keyword(s):  
High Speed ◽  
Analytical Models ◽  
Noise Prediction ◽  
High Speed Train ◽  
Radiated Noise

A comparative study of high-speed train noise prediction models

2012 ◽  
Vol 131 (4) ◽  
pp. 3263-3263
Author(s):  
Guo Yanjie ◽  
Liang Junhai ◽  
Wang Dongzhen ◽  
Ge Jianmin
Keyword(s):  
Comparative Study ◽  
High Speed ◽  
Prediction Models ◽  
Noise Prediction ◽  
High Speed Train

Research on Model of Noise Prediction of High-Speed Train by SEA Method

2012 ◽  
Author(s):  
Lifang Yang ◽  
Xiaowei He ◽  
Fanyu Meng
Keyword(s):  
High Speed ◽  
Rapid Development ◽  
Noise Analysis ◽  
Input Power ◽  
Aerodynamic Noise ◽  
Noise Prediction ◽  
High Speed Train ◽  
Small Noise ◽  
High Speed Trains ◽  
Calculation Results

China’s rapid development of high-speed train has been in the research spotlight over the years; this paper presents a method to predict the transmission of aerodynamic noise and rail noise inside train compartments for high-speed trains operating at speeds larger than 200 km/h. The numerical tool could be used in parameter studies for noise control. In order to develop the noise prediction model of high speed train, the noise source of high-speed train is analyzed. Based on the noise analysis, the SEA model is built. Due to the small noise difference in one train car, the SEA model is divided into head cab, head passenger cab and middle car three parts. Combined with the finite and boundary element method, the input power and SEA parameters are researched and calculated. In the end of the paper, the results of SEA noise predicting model are compared with theoretical calculation results in order to verify the engineering use.

scholarly journals On the Analytical Approach to Present Engineering Problems: Photovoltaic Systems Behavior, Wind Speed Sensors Performance, and High-Speed Train Pressure Wave Effects in Tunnels

2015 ◽  
Vol 2015 ◽  
pp. 1-17 ◽  
Author(s):  
Santiago Pindado ◽  
Javier Cubas ◽  
Félix Sorribes-Palmer
Keyword(s):  
Pressure Wave ◽  
High Speed ◽  
Analytical Approach ◽  
Analytical Models ◽  
High Speed Train ◽  
Photovoltaic Devices ◽  
Engineering Problems ◽  
Wave Effects ◽  
Physical Phenomena ◽  
Cup Anemometer

At present, engineering problems required quite a sophisticated calculation means. However, analytical models still can prove to be a useful tool for engineers and scientists when dealing with complex physical phenomena. The mathematical models developed to analyze three different engineering problems: photovoltaic devices analysis; cup anemometer performance; and high-speed train pressure wave effects in tunnels are described. In all cases, the results are quite accurate when compared to testing measurements.

scholarly journals Aerodynamic Noise Separation of an EMU Trailer Bogie Area Using Train Operation Tests

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Leiming Song ◽  
Hao Chen ◽  
Baochuan Li
Keyword(s):  
Transfer Coefficient ◽  
High Speed ◽  
Noise Analysis ◽  
Central Area ◽  
Aerodynamic Noise ◽  
Frequency Noise ◽  
High Speed Train ◽  
Radiated Noise ◽  
High Speed Trains ◽  
Train Operation

The operation transfer path analysis (OTPA) technique was used to measure the vibration and noise transfer coefficient functions of wheel-rail noise and radiated noise from an electric multiple unit (EMU) train (high-speed train in China) trailer bogie structure to the central area of the trailer bogie for a train running at speeds of 0–5 km/h. By applying these transfer coefficient functions to the noise analysis of high-speed train operation, the contributions of wheel-rail noise and frame-radiated noise to the noise of the bogie area at high speeds are obtained, and the aerodynamic noise is separated from the total noise, providing a reference for vibration damping and noise reduction in high-speed trains. Analysis of test data shows that, in the central area of the trailer bogie of high-speed trains, the low-frequency noise mainly comes from the structural radiated noise of the bogie, and the mid- to high-frequency noise is primarily due to aerodynamic noise. In addition, when an EMU train operates at speeds below 250 km/h, the noise in the central area of the trailer bogie is primarily caused by the structural radiated noise. When the operating speed is higher than 250 km/h, the noise in the central area of the trailer bogie is mainly due to aerodynamic noise, and the aerodynamic noise contribution increases with increase in speed.

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