混合FE-SEA方法预测高速列车车体结构隔声量  

Prediction of Sound Insulation of Body Structures of High-speed Trains Based on Hybrid FE-SEA Method

作　　者：赵艳菊[1] 林君山[1] 梁建英[1] 帅仁忠 

机构地区：[1]南车青岛四方机车车辆股份有限公司,山东青岛266111

出　　处：《噪声与振动控制》2013年第5期72-76,共5页Noise and Vibration Control

基　　金："十二五"科技支撑计划(基金编号:2011BAG05B01);"十二五"973项目课题(基金编号:2011CB711105)

摘　　要：针对高速列车车体结构刚度大,结构复杂的特点,采用混合FE-SEA方法建立基于混响室以及混响室-消声室的两种隔声量预测模型,通过仿真结果对比,两种模型预测的隔声量结果相同,将仿真结果与实测值对比,结果表明,在100 Hz～1 000 Hz的中频范围内FE-SEA模型的预测结果与试验结果吻合良好,混合FE-SEA方法可以有效用于高速列车车体结构的隔声量预测。The hybrid FE- SEA method was used to predict sound insulation performance of the body structures of high- speed trains. Two different hybrid FE-SEA models based on reverberation chamber and DAF and SIF theories were built. Mutual comparison of the simulation results shows that the sound insulations of the two models are predicted the same. Comparison of the simulation results with the testing data shows that in the medium frequency range of 100 Hz 1 000 Hz, the hybrid FE-SEA can predict sound insulation of the body structures efficiently and precisely.

关 键 词：声学 混合FE—SEA方法 隔声量预测 高速列车车体结构 

分 类 号：U270.16[机械工程—车辆工程]