加速工况下传动系统扭转振动分析  

Modeling and research on torsional vibration of transmission system under speeding-up condition

作　　者：周林[1] 郑四发[1] 连小珉[1] 

机构地区：[1]清华大学汽车安全与节能国家重点实验室,北京100084

出　　处：《振动工程学报》2010年第6期601-605,共5页Journal of Vibration Engineering

基　　金：国家863计划资助项目(2006AA110105-3)

摘　　要：传动系统对整车振动和噪声有着重要的影响。作为一个复杂的多自由系统,包括齿轮啮合刚度的非线性和传动轴、半轴等柔性体。首先根据齿轮啮合传动的动力学模型,基于Hertz碰撞理论建立了变速器5档传动齿轮的啮合刚度分析模型;然后建立了车辆传动系统的多体动力学模型,包括变速器齿轮、传动轴、差速器、半轴和轮胎结构,分析得到系统固有特性;融合基于Hertz碰撞理论的变速器传动模型和基于多体动力学的刚柔动力学模型,对加速工况的强迫扭转振动进行了仿真与分析,对比了含非线性齿轮传动的刚体模型及刚柔结合模型的分析结果,最后通过实车进行了验证。The torsional vibration of the transmission system is one of the most important resources of vehicle NVH（noise,vibration and harshness） problem.As a complex system,the transmission system involves non-linear gear meshing,as well as the elastic deformation of the driveline and half shaft.To solve the problem,this paper firstly analyses the nonlinear gear meshing based on dynamics of gear system and the Hertz elastic theory.Then a simulation model has been built with non-linear gears meshing of a transmission,two elastic drivelines,a differential,two half shafts and two tires.The dynamic characteristics have been investigated with the model.At the end the torsional vibration of the transmission system under speeding-up condition and comparisons with a real vehicle results are studied.

关 键 词：传动系统 扭振 HERTZ 多体动力学 柔性体 

分 类 号：U464.334[机械工程—车辆工程] O347.6[交通运输工程—载运工具运用工程]