Calculation of full-spectrum interior noise of high-speed train with SAEF method

被引：0
作者：
Mao, Jie [1 ]
Zheng, Xu [1 ]
Hao, Zhiyong [1 ]
Sun, Qiang [2 ]
Ma, Xiaolong [2 ]
机构：
[1] Department of Energy Engineering, Zhejiang University, Hangzhou
[2] Research and Development Center, Changchun Railway Vehicles Company Limited, Changchun
来源：
Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology | 2015年 / 48卷 / 11期
关键词：
Full-spectrum noise; High-speed train; Multi-physical-field coupling excitation; Statistical acoustic energy flow;
D O I：
10.11784/tdxbz201404101
中图分类号：
学科分类号：
摘要：
Statistical acoustic energy flow(SAEF)method was proposed to study full-spectrum interior noise of highspeed railway trains(HST), considering multi-physical-field coupling excitations to stimulate the acoustic energy flow between the exterior excitations and interior noise, as well as between the interior acoustic cavities. First of all, rigid multi-body dynamics(RMBD), fast multi-pole boundary element analysis(FMBEA)and large-eddy simulation( LES)were employed to extract the wheel-rail interaction forces/secondary suspension forces, wheel-rail rolling noise and aerodynamic noise at 350 km/h, respectively; and these excitations were validated by references. Second, a finite element(FE)car model was constructed; the precision of the global FE car as well as the local FE aluminum alloy extrusion-trim part composition boards was validated by modal analysis via multi-input and multioutput technology. Thus, the mode-based sound transmission loss(STL)accuracy of any composition board was indirectly ensured. Finally, the SAEF model of the curb car, which was stimulated by the coupled excitation and defined with the given composite board STLs, was constructed to calculate the interior noise in 0~4 000 Hz at 350 km/h. The simulated and measured interior center sound pressure levels(SPL) were compared. The results show that the variation trend of the simulated 1/3 octave band SPL spectrum agrees well with that of the on-line-measured one. The deviation between the simulated and measured overall SPLs is 2.6 dB(A), which was well controlled below the engineering tolerance limit, thus validating the feasibility of SAEF method in the HST full-spectrum interior noise analysis. © 2015, Editorial Board of Journal of Tianjin University(Science and Technology). All right reserved.
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页码：960 / 968
页数：8
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