【摘要】 为分析高速列车噪声面板的贡献度,需要对列车内噪声的来源、传递路径进行研究。文中基于某型高速列车中间车车体结构,建立了高速列车的NVH混合等效模型,仿真验证了计算结果与实测数据具有很好的一致性。最后,对子系统的输入净功率流进行追踪,确定了列车车内噪声的传递路径、噪声源贡献量以及面板贡献度。结果表明:列车客室端部的噪声贡献度主要来源于内饰地板。更多还原

【Abstract】 In order to analyze the contribution of high-speed train noise panel, it is necessary to study the source and transmission path of noise in the train. Based on the structure of the intermediate car body of a type of high-speed train, this paper establishes the NVH hybrid equivalent model of high-speed train, and the simulation verifies that the calculation results are in good consistency with the measured data. Finally, the net power flow of the input subsystem is tracked to determine the transmission path of the in-vehicle noise, the contribution of the noise source and the panel contribution. The results show that the noise contribution at the end of the train passenger room mainly comes from the interior floor.更多还原