某型汽车排气系统的振动响应分析及验证  

The vibration response analysis and validation of a vehicle exhaust system

作　　者：孙颖 娄玉印 周胜飞 张莹 Sun Ying;Lou Yuyin;Zhou Shengfei;Zhang Ying(Department of Mechanical Engineering,Lushan College of Guangxi University of Science and Technology,Guangxi Liuzhou,545616,China)

机构地区：[1]广西科技大学鹿山学院机械工程系

出　　处：《机械设计与制造工程》2019年第9期74-78,共5页Machine Design and Manufacturing Engineering

基　　金：2017年度广西高校中青年教师基础能力提升项目(2017KY1392)

摘　　要：为了研究排气系统对汽车车身的振动响应规律,对其进行了振动响应分析。首先对排气系统进行约束模态分析,并通过路面试验获得了发动机振动的实际参数;然后利用模态叠加法对排气系统结构进行动力响应计算,得到了排气系统的振动响应规律,并以此判断该排气系统是否符合设计标准;最后将实测得到的加速度数据与仿真数据进行对比,验证了该仿真方法的可靠性。该分析方法可以作为同类型排气系统结构设计的依据。In order to study the vibration response of the exhaust system to the vehicle body,it analyzes its vibration response in constraint modal of exhaust system,obtains the actual parameters of the engine vibration from experiment.It uses the modal superposition method to calculate the dynamic response of the exhaust system structure,analyzes the vibration response regularity of the exhaust system.Aiming at judging the whether the exhaust system both in line and the industry standard,it compares the measured acceleration data with the simulation data to verify the simulation method,ensures that the analysis method can be used as a theoretical guide for the design of the same type of exhaust system as well.

关 键 词：振动响应 排气系统 模态分析 谐响应分析 隔振率 

分 类 号：U464.134[机械工程—车辆工程]