Transfer Path Analysis of Interior Noise above Bogie Area of High-speed Train

doi:10.3901/JME.2020.04.168

Abstract

Abstract: In order to realize the low noise design of the train and create a great riding environment for the passengers, it is necessary to explore the source of noise contribution inside the train. And the current research on the source of interior noise contribution to high-speed train at various speeds is not comprehensive enough. A comprehensive analysis of the source of noise contribution is of great significance for realizing high-speed train noise and vibration control. Based on the operational transfer path analysis(OTPA) method, taking the interior noise of the point that has 1.2 m from the floor above the bogie and under the pantograph as the target point, an OTPA model of high-speed train is developed. The contribution of transfer paths and sources to interior noise are analysed in detail. The results show that the floor contribution and bogie contribution are dominant at low speeds. After the speed exceeds 300 km/h, the contribution of the roof and pantograph contributions are dominant. The noise source outside the vehicle is mainly transferred into the car through the structure-borne noise, and the contribution from air-borne noise is small. In 160-315 Hz, the contribution of the vibration of the traction rod connecting area is the most significant. In 250 Hz, the contribution of vibration of the pantograph base is the most significant. In 630 Hz, the vibration of anti-roll torsion bar is the major contribution. The research results can provide guidance for the noise and vibration control measures of rail vehicles.

Key words: operational transfer path analysis, spherical array, secondary suspension, interior noise, contribution

CLC Number:

U231
TB53

GAO Yang, ZHU Ziwei, XIE Suming, NIE Jiaxing, HAN Jian, XIAO Xinbiao, WANG Jintian. Transfer Path Analysis of Interior Noise above Bogie Area of High-speed Train[J]. Journal of Mechanical Engineering, 2020, 56(4): 168-176.

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