![]() ![]() Mao, A full-spectrum analysis of high-speed train interior noise under multi-physical-field coupling excitations, Mechanical Systems and Signal Processing, 75 (2016) 525–543. Hong, A study on interior noise characteristics of high speed trains, Journal of Korean Sociology Railway, 16(1) (2018) 14–19 (in Korean). Nefske, A coupled structural-acoustic finite element model for vehicle interior noise analysis, Journal of Vibration and Acoustics, 106(2) (1984) 314. Choi, Interior noise of a Korean high-speed train in tunnels, Proceedings of Acoustics 2004, Gold Coast, Australia (2004) 415–419. ![]() Wu, Experimental study on the influence of different track structures on metro vehicle interior noise, Railway Standard Design, 65(1) (2021) 154–159 (in Chinese). Chen, Analysis of noise characteristics of metro vehicle on different track structures, Railway Standard Design, 63(4) (2019) 22–27 (in Chinese).Ĭ. Xie, Influence of rail fastener stiffness on railway vehicle interior noise, Applied Acoustics, 145 (2019) 69–81. Thompson, Railway Noise and Vibration: Mechanisms, Modelling and Means of Control-Part I-IV: Rail vibration 2013, Elsevier (2013). Based on element contribution analysis, the damping optimization method shows that the global SPL peak decreases by 4.3, 6.4, 7.8, 1.8, 3.5, and 5.2 dB (A,) respectively, from position 1 to 6.ĭ. The thickness increase can improve sound insulation level, but change the lower natural frequency, improve the structure’s stiffness, suppress the amplitude of the transfer function. The results show that, based on the acoustic transfer vector method, the critical element contribution areas to the low-frequency noise were found after removing the impact of critical elements, the sound pressure level peak at 80 Hz and 110–200 Hz decreased. An original study tries to predict low-frequency interior noise and reveal the acoustic law of panel contribution and improve ride comfort combining a wheel/rail rolling noise model, a rigid-flexible vehicle-track coupled dynamic model and detailed car body structural/acoustic finite element models. For a metro vehicle, the wheel/rail vibration transmits to the car body through the primary and secondary suspensions, causes the car floor vibration, the wheel/rail rolling noise transmits to carriage. Low-frequency interior noise tends to tire passengers and affect their health, the wheel/rail vibration and rolling noise are crucial noise sources. ![]()
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