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建立了用于地铁车辆中高频噪声分析的整车统计能量分析(SEA)预测模型,分析了对地铁车辆内部噪声具有较大贡献的噪声源种类,通过对SEA模型施加噪声源激励载荷进行仿真,计算出地铁车辆内部各部位的噪声声压级,找出地铁车辆噪声的薄弱环节进而进行改进。
A statistical energy analysis (SEA) prediction model for vehicle mid- and high-frequency noise in subway vehicles was established. The types of noise sources contributing to the internal noise of metro vehicles were analyzed. By simulating the excitation load of SEA model with noise sources, Calculate the sound pressure level of various parts of the subway vehicle interior, find out the weak link of the subway vehicle noise and then improve.