基于Virtual.Lab软件的高速列车结构噪声仿真分析

Simulation of High Speed Train Structural Noise Based on Virtual.Lab

从高速列车车内噪声频率特性入手,分析了高速列车低频结构噪声在车内声场中的重要作用.通过采用Virtual.Lab软件,创建了某高速列车中间车车体的结构噪声计算模型,并在Virtual.Lab软件中进行了声振耦合计算,分析了在车体转向架上方振动加速度激励情况下,车内噪声的频谱特性.结合经验性的测试结果,计算得到的结果具有一定的参考意义.通过创建更为准确的结构噪声计算模型,分析列车结构噪声的特性,为今后的高速列车研发设计提供参考.

From the aspect of high speed train internal noise frequency characteristics, the important function of the high speed train low frequency structural noise in the sound field is analyzed, a computational model is established for the high speed train intermediate ear body shell structural noise through the adaptation of Virtual Lab software for sound vibration coupling calculation, and the spectrum characteristics of the train internal noise is analyzed under the situation of the vibration acceleration excited for the car body part above bogie. Combined with experimented test result, it is observed that the calculation has certain reference sense. The characteristics of the train structural noise can be analyzed through the establishment of more precise structural noise computational model, which can make reference for the R＆D design of the high speed train in the future.