汽车后侧窗风振问题的研究  

A Study on Rear Window Wind Vibration of a Sedan

作　　者：吴海波[1] 周江彬[1] 陈蒨[1] 刘功文[1] 乾超群 

机构地区：[1]上海大众汽车有限公司,上海201805 [2]上海翼锐汽车科技有限公司,上海201805

出　　处：《汽车技术》2016年第3期9-12,25,共5页Automobile Technology

摘　　要：通过与风洞试验对比并考虑乘客舱内部壁面的屈服、吸收及泄漏特性,建立了一套数值计算方法,将不同速度下数值计算得到的风振噪声最大声压级及其发生频率与风洞试验结果进行对比,验证了其准确性。基于计算模型,分析了汽车后侧窗风振现象产生的主要原因及其影响因素,并进行了优化,优化效果较好,能有效缩短开发周期并降低后期实车风洞试验成本。In this paper, a numerical computation method is established against wind tunnel test and with fully consideration of absorption, compliance, and leakage of the passenger compartment interior wall. And then, by comparing the calculated maximum sound pressure level and its frequency at different velocity with the wind tunnel test results, the simulation methodology is validated. After that, the main cause and its influence factor of the rear side window vibration are analyzed based on the computation model, and the optimization is conducted, which can shorten development cycle and reduce vehicle wind tunnel cost effectively.

关 键 词：后侧窗 振动噪声 数值计算 声压级 频率 风洞试验 

分 类 号：U463.835[机械工程—车辆工程]