基于CDH/EXEL的多孔吸声材料在内饰车身噪声传递函数分析中的应用  

Application of porous sound-absorbing material in noise transfer function analysis of automobile body with interior decoration based on CDH / EXEL

作　　者：周健 刘亚彬 

机构地区：[1]阿尔特汽车技术股份有限公司,北京100076

出　　处：《计算机辅助工程》2016年第5期29-31,共3页Computer Aided Engineering

基　　金：北京市科委2015年度北京"设计之都"课题(Z151100003215025)

摘　　要：在汽车内饰车身噪声频响分析中,通过有限元实体单元和RBE3单元建立多孔吸声材料模型,通过MSC Nastran和结合CDH/EXEL的MSC Nastran计算采用多孔吸声材料的内饰车身的噪声进行计算,并比较二者的计算结果.结果表明:CDH/EXEL能使有效提高分析曲线与试验曲线的对标结果的准确性,从而更好地指导车身结构设计.In the frequency response function analysis on noise of automobile body with interiordecoration, the model of porous sound-absorbing material is built by solid finite element and RBE3element, the noise of the automobile body with interior decoration is calculated alternately by MSCNastran and MSC Nastran combined with CDH/EXEL, and then the calculation results are compared.The results indicate that, CDH/EXEL can improve the accuracy of the benchmarking results between theanalysis curve and the test curve, which can make better guide for the car body structure design.

关 键 词：汽车 内饰车身 多孔吸声材料 噪声传递函数 

分 类 号：U467.493[机械工程—车辆工程]