【作者】 左言言； 张焱； 刘海波；

【Author】 ZUO Yan-yan ZHANG Yan Liu Hai-bo (Institute of Noise and Vibration,Jiangsu University,China 212013)

【机构】 江苏大学振动噪声研究所；

【摘要】 本文首先建立了汽车车身结构的有限元模型,对车身进行了有限元计算模态分析;然后建立了车室空腔声场的声学有限元模型,利用结构及声场动态分析技术,计算出车室空腔声场的声学模态,对该车身结构的动态特性、车室空腔声场的声学特征进行了研究。在此基础上,分析了声—振耦合系统在发动机激励下的声学响应,为控制车内的低频噪声指明了方向。更多还原

【Abstract】 The finite element model was established of a vehicle body at first,and the computed modal analysis was conducted.Then the acoustical finite element model of the vehicle cabin cavity was also established,and its acoustical modal was computed with dynamical analysis techniques on structure and acoustics.The dynamic characteristics of the vehicle structure and the acoustic features of the vehicle cabin cavity were studied here at same time.Based on the analysis above,acoustical response analysis of the sound -vibration coupling system of the cabin cavity was carried out,the results could be valuable for the low frequency noise control of the vehicle interior sound field.更多还原