基于声振主要传播路径的汽车风噪简化模型评估

以某款实车为研究对象建立了统计能量分析（Statistical Energy Analysis，SEA）模型，通过传播特性分析对其主要传播路径进行分类，并进行简化模型近似性分析。通过对SEA模型中主要和次要子系统选取，建立了2种简化模型，对其车内噪声和传播路径的计算表明:模型子系统特性改变，能量的传播路径和大小特性随之变化、甚至子系统对外界流体脉动和声场的接受能力也发生变化，导致得到的车内噪声计算结果发生改变。简化模型的使用还需进一步研究。

Evaluation of simplified automobile wind noise model based on main propagation path of sound and vibration

A Statistical Energy Analysis (SEA) model was established for a real vehicle. The main propagation paths were classified by the analysis of propagation characteristics, and the simplified model approximation analysis was performed. By choosing the main and secondary systems in the SEA model, two simplified models are established, and the calculation of their interior noise and propagation path shows that the characteristics of the model subsystem change, the energy propagation path and size characteristics change, and even the subsystem's ability to accept the external fluid pulsation and sound field changes, resulting in the change of the calculated interior noise. The use of the simplified model requires further study.