轿车车内噪声统计能量仿真与降噪方法研究  

Study on a SEA-based method for interior noise simulation and control of passenger car

作　　者：王岩松[1,2] 鄢守礼[2] 邱志[2] 

机构地区：[1]上海工程技术大学汽车工程学院,上海201620 [2]辽宁工业大学汽车与交通工程学院,锦州121001

出　　处：《机械设计与制造》2011年第6期40-42,共3页Machinery Design & Manufacture

基　　金：国家自然科学基金(51045007);上海市高校特聘教授(东方学者)岗位计划资助;辽宁省教育厅科研项目(2008RC26)

摘　　要：对于受高频、宽频带随机激励的复杂车辆结构动力学响应及其噪声辐射问题,传统的计算方法难以获得满意结果。采用统计能量分析(SEA)方法对某国产轿车的车内声场进行了建模、仿真研究和声贡献分析,并以此为基础进行了车内噪声的改进设计,分别讨论了地板阻尼层、侧窗玻璃厚度和吸声材料对车内噪声的影响。通过计算各个子系统间的能量流动,分析车内噪声的产生机理,讨论了不同吸、隔声材料对车内噪声响应特性的影响,研究结果可为车内声学设计提供参考。For computing the dynamic response and noise radiation of a vehicle with complex structure under a high and broad frequency excitation,the traditional methods cannot obtain satisfied results.Based on a sample passenger car,the statistical energy analysis（SEA）method is adopted for modeling,simulating and sound contribution analyzing of interior sound field of the vehicle,on which improving design for the interior noise is done,and the impact factors,such as thicknesses of the floor damping layer and the side-window glass,are discussed respectively.By calculating the energy flow among the subsystems,the generating mechanism of the interior noise is revealed;meanwhile the effects on response characteristics of the interior noise with different absorption and isolation materials are specially analyzed.The study results may provide a reference for vehicle acoustical design.

关 键 词：轿车 车内噪声 统计能量法 仿真 声学材料 

分 类 号：TH16[机械工程—机械制造及自动化] TP391.9[自动化与计算机技术—计算机应用技术]