Experimental Analysis on Characteristics and Source Identification of Interior Noise of a High-speed Train Running in a Tunnel

doi:10.3901/JME.2020.08.207

Abstract

Abstract: The interior noise level of high-speed trains running in a tunnel can be obviously increased compared with that running on the ground surface. The interior noise and vibration characteristics of a high-speed train under two different running cases (on the ground surface or in a tunnel) at speed of 160-350 km/h are analyzed according to the line test. The interior noise and vibration characteristics, the bogie area noise and vibration characteristics, the aerodynamic noise characteristics on vehicle body surface, and their variations with speed under those two running cases are obtained. By using the 50-channel spherical acoustic array, the main noise sources of the interior noise under those two running cases are identified, the contribution rate of the noise sources are analyzed, and on this basis, the interior noise and vibration transmission characteristics are studied. Results show that the difference of interior noise spectrum in the two running cases is mainly reflected in 315-2 000 Hz. The difference of sound pressure level for different lines is relatively independent to the operating speed. The interior noise is significantly affected by the wheel-rail noise excitation. For the middle area of the coach, when the train runs at 350 km/h, the contribution rates of the roof and the rear of the cabin are increased by 4.0% and 3.0%, respectively; the contribution rate of floor is decreased by 8.6%, and the main differences of the noise spectrum between them are located in 63-160 Hz. For the sidewall area, the low frequency noise source on the ground surface mainly comes from the vibration of the sidewall; but for the tunnel, it mainly comes from the aerodynamic excitation of the side wall surface. The variation of the total noise value and the spectrum distribution in the passenger room will be reduced under the tunnel operation. The existing concept of the noise control concern mainly at the end of the passenger compartment, but as this study indicates, it is also crucial to pay attention to the central area of the passenger compartment under the tunnel operation.

Key words: high-speed train, interior noise, tunnel, ground surface, sound source recognition

CLC Number:

U270*

LIU Ming, ZHANG Jie, GAO Yang, JIANG Wenjie, XIAO Xinbiao. Experimental Analysis on Characteristics and Source Identification of Interior Noise of a High-speed Train Running in a Tunnel[J]. Journal of Mechanical Engineering, 2020, 56(8): 207-215.

References

[1] CHOI S. 韩国高速列车在隧道内的车内噪声[J]. 国外铁道车辆,2016,53(5):15-18. CHOI S. Interior noise of a korean high-speed train in tunnels[J]. Foreign Rolling Stock,2016,53(5):15-18.
[2] 张强. 高速列车司机室与观光室车内噪声预测研究[D].杭州:浙江大学,2015. ZHANG Qiang. Research on interior noise prediction of high-speed train cab and tourist cabin[D]. Hangzhou:Zhejiang University,2015.
[3] 范蓉平,孟光,贺才春,等. 粘弹性阻尼材料降低列车车内噪声的试验研究[J]. 振动与冲击,2008(6):123-127,192. FAN Rongping,MENG Guang,HE Caichun,et al. Experimental study on viscoelastic damping materials for noise control in railway vehicles[J]. Journal of Vibration and Shock,2008(6):123-127,192.
[4] 张骏,张捷,陈沛,等. 时速250公里动车组车内声源特性及其贡献量分析[J]. 噪声与振动控制,2017,37(3):96-100,130. ZHANG Jun,ZHANG Jie,CHEN Pei,et al. Characteristics and contribution analysis of interior noise sources of a 250 km/h internal combustion multiple unit[J]. Noise and Vibration Control,2017,37(3):96-100,130.
[5] 张捷,肖新标,韩健,等. 高速列车车内客室端部噪声分布特性与声学模态分析[J]. 机械工程学报,2014,50(12):97-103. ZHANG Jie,XIAO Xinbiao,HAN Jian,et al. Characteristics of noise distribution at the ends of the coach and acoustic modal analysis of high-speed train[J]. Journal of Mechanical Engineering,2014,50(12):97-103.
[6] 潘勇. 动车组车内噪声和车外噪声源识别研究[D]. 长沙:中南大学,2009. PAN Yong. Research on interior noise and noise source identifieation of the EMU[D]. Changsha:Central South University,2009.
[7] 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会. GB/T 3449-2011声学轨道车辆内部噪声测量[S]. 北京:中国标准出版社,2011. General Administration of Quality Supervision,Inspection and Quarantine of the People's Republic of China,Standardization Administration of the People's Republic of China. GB/T 3449-2011 Acoustics-measurement of noise inside railbound vehicles[S]. Beijing:Standards Press of China,2011.
[8] The International Organization for Standardization. ISO 3381:2011. Railway applications-acoustics measurement of noise inside railbound vehicles[S]. Switzerland:ISO Copyright Office,2011.
[9] MELLET C,LETOURNEAUX F,POISSON F,et al. High speed train noise emission:Latest investigation of the aerodynamic/rolling noise contribution[J]. Journal of Sound and Vibration,2006,293(3-5):535-546.
[10] HE Be,XIAO Xinbiao,ZHOU Qiang,et al. Investigation into external noise of a high-speed train at different speeds[J]. Journal of Zhejiang University Science A (Applied Physics & Engineering),2014,15(12):1019-1033.
[11] ZHANG Jie,XIAO Xinbiao,SHENG Xiaozhen,et al. Characteristics of interior noise of a Chinese high-speed train under a variety of conditions[J]. Journal of Zhejiang University-Science A(Applied Physics & Engineering),2017,18(8):617-630.
[12] THOMPSON D J. Railway noise and vibration:Mechanisms,modelling and means of control[J]. Elsevier Science & Technology,2009,153(4):12-14.
[13] 刘加利. 高速列车气动噪声的理论研究与数值模拟[D]. 成都:西南交通大学,2009. LIU Jiali. The theoretical research and numerical simulation of aerodynamic noise for high-speed train[D]. Chengdu:Southwest Jiaotong University,2009.
[14] 褚志刚,周亚男,王光建,等. 基于声压球谐函数分解的球面波束形成噪声源识别[J]. 农业工程学报,2012,28(增刊1):146-151. CHU Zhigang,ZHOU Yanan,WANG Guangjian,et al. Noise source identification by spherical beamforming based on sound pressure spherical harmonics decomposition[J]. Transactions of the Chinese Society of Agricultural Engineering,2012,28(Suppl.1):146-151.
[15] 褚志刚,杨洋,贺岩松,等. 球谐函数波束形成声源识别扩展方法[J]. 机械工程学报,2015,51(20):45-53. CHU Zhigang,YANG Yang,HE Yansong,et al. Extension method of spherical harmonics beamforming for sound source identification[J]. Journal of Mechanical Engineering,2015,51(20):45-53.