某型汽车排气系统的模态分析  

Modal Analysis of an Automobile Exhaust System

作　　者：李祖业 谢华林 龚运息[2] 杨迪新 LI Zu-ye;XIE Hua-lin;GONG Yun-xi;YANG Di-xin(Liuzhou Wuling Automobile Industry Co.Ltd.,Liuzhou Guangxi 545000,China;School of Mechanical and Traffic Engineering,Guangxi University of Science and Technology,Liuzhou Guangxi 545006,China)

机构地区：[1]柳州五菱汽车工业有限公司,广西柳州545000 [2]广西科技大学机械与交通工程学院,广西柳州545006

出　　处：《装备制造技术》2021年第2期97-99,103,共4页Equipment Manufacturing Technology

摘　　要：利用UG和Hyperworks软件联合建立了某汽车排气系统的有限元模型,并对该排气系统进行了模态分析,得到系统的各阶频率及固态振型,并且使系统的固有频率避开了发动机的激励频率,为排气系统后续NVH性能的研究供了依据。The finite element model of an automobile exhaust system is established by using UG and HyperWorks software,and the modal analysis of the exhaust system is carried out. The frequencies and solid-state vibration modes of the system are obtained, and the natural frequency of the system avoids the excitation frequency of the engine,which provides a basis for the subsequent study of NVH performance of the exhaust system.

关 键 词：排气系统 有限元法 模态分析 

分 类 号：U464.134[机械工程—车辆工程]