轻轨车辆内部噪声的仿真预测

摘要

利用统计能量法软件VA One建立了轨道车辆SEA模型，理论计算了用于SEA分析的各种统计能量参数，最后对车辆内部噪声进行了预测。仿真结果表明：车内噪声主要集中在频率为500~1600 Hz范围内，不同状态下影响车厢内外噪声的主要噪声源会发生变化，噪声峰值出现的位置不同。%A SEA model of railway vehicle is established by using statistical energy analysis software(VA One), and various parameters for SEA model are calculated theoretically. Finally,the interior noise predictions of the vehicle are achieved. The simulation results show that the vehicle noise mainly distributes in the frequency range of 500~1600 Hz,the main noise sources which influence the interior noise of the vehicle could change under stationary state and operation condition,and the peak values of the noise are in different positions under different states.