噪声与振动控制2017，Vol.37Issue(5)：119-123,5.DOI:10.3969/j.issn.1006-1355.2017.05.025
整车车内噪声仿真的SEA分析方法研究及应用
Research and Application of SEA Analysis Method for Vehicle Interior Noise Simulation
摘要
Abstract
Among the simulation analysis methods of vehicle interior noise, the FEM/BEM method can be used to simulate in the whole frequency band theoretically. However, due to the short wavelength of high frequency noise and the material uncertainty in preliminary simulation, it is difficult to identify the FEM/BEM parameters and realize the calculation. In this case, the statistical energy analysis (SEA) method based on energy averaging has specific advantage. In this paper, the application of this method to internal noise simulation of vehicles is discussed. The theory of the SEA analysis method is summarized. The internal high-frequency noise simulation is elaborated in three aspects:the excitation source and transfer path of the internal noise, the method of NVH performance development and the SEA modeling method. The application of the SEA simulation in the vehicle is mainly used to guide the development of acoustic package. To combine the key scientific problem in the SEA simulation with engineering practice, two typical examples are given. The first is to improve the simulation accuracy by establishing a relatively independent double leaf model based on double wall theory;and the second is to optimize gearbox's high-frequency howling by controlling the acoustic package. The sound pressure near the driver's head is reduced by 1.31 dB by laying double layer interior carpet. The simulation and reduction of the high frequency noise by using the SEA can significantly improve the NVH performance and the ride comfort of the vehicle. This paper may provide a reference for related fields.关键词
声学/整车噪声/高频噪声/子系统/统计能量法/噪声控制Key words
acoustics/vehicle noise/high-frequency noise/subsystem/statistical energy analysis (SEA)/noise control分类
建筑与水利引用本文复制引用
侯献军,郭金,杜松泽,郭彩祎,刘志恩..整车车内噪声仿真的SEA分析方法研究及应用[J].噪声与振动控制,2017,37(5):119-123,5.基金项目
汽车排气噪声品质的阶次量化与声音设计研究(51575410) （51575410）
