|Table of Contents|

Noise characteristics in different bogie areas during high-speed train operation(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2020年04期
Page:
174-183
Research Field:
载运工具运用工程
Publishing date:

Info

Title:
Noise characteristics in different bogie areas during high-speed train operation
Author(s):
WANG Dong-zhen1; 2;  GE Jian-min1
1. School of Physics Science and Engineering, Tongji University, Shanghai 200092, China; 2. CRRC Qingdao Sifang Co., Ltd., Qingdao 266111, Shandong, China
Keywords:
high-speed train;  bogie area;  noise spectrum characteristic;  noise source separation;  wheel-rail noise;  aerodynamic noise
PACS:
U270.16
DOI:
10.19818/j.cnki.1671-1637.2020.04.014
Abstract:
Taking a certain type of high-speed train in China as a research object, the bogie area noise that is one of the major noise sources of high-speed train in operating mode was tested, the noise characteristics and laws of different bogie types and different bogie positions were studied, and the noise values and spectrum characteristics at different speed levels were predicted. Based on certain assumptions, the noise components in the head-car bogie area were separated by using the test data analogy method. Research result shows that the main sources of vehicle noise are concentrated in the bogie area in the speed range of 200-350 km·h-1. The bogie area noise of the head-car is larger than that of the tail-car, and the amplification is approximately 3 dB(A)at the speed of 200 km·h-1. The main reason is that the aerodynamics noise caused by the airflow impact at the head-car bogie is greater than that caused by the eddy flow at the tail-car bogie. The bogie area noise of intermediate motor car is larger than that of the intermediate trailer car, and the amplification is approximately 5 dB(A)at the speed of 200 km·h-1. The main reason is that the traction system noise is generated in the motor bogie compared with the noise of trailer bogie. With the operating speed increasing, the noise in the bogie area significantly increases in the whole frequency band, and the noise-peak frequency also increases, which is mainly due to the wheel rolling noise. When the operating speed becomes higher, the sleeper impact frequency will be higher accordingly. The third-order relationship of noise increasement versus speed increasement in the bogie area of the intermediate trailer conforms with the growth trend of wheel-rail noise increasement versus speed increasement. In terms of the noise in head-car bogie area, the aerodynamics noise is more significant, and its proportion increases with the increase of operating speed.13 figs, 32 refs.

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Last Update: 2020-08-20