重要参数对齿轮副承载情况影响规律研究  

Investigation into the Influence of Transmission Parameter Variation on the First Gear Pair Loading Conditions

作　　者：冯慧华[1] 董彪[1] 尚蛟[1] 鲁守卫[1] 康黎云 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]长安汽车股份有限公司汽车工程研究院,重庆401120

出　　处：《北京理工大学学报》2011年第2期131-135,143,共6页Transactions of Beijing Institute of Technology

基　　金：国家部委基础研究项目(1030021200706)

摘　　要：建立了某轿车变速器一挡传动齿轮副啮合状态有限元分析模型,基于显式动力学理论,对最大转矩工况下该传动副的瞬态啮合过程进行了动力学仿真计算,得到了轮齿齿面与齿根危险区域的主应力、等效应力的幅值与瞬态变化过程等结果.在此基础上,研究了发动机输出转矩、齿轮轴刚度、安装误差以及齿根过渡圆角等参数变化对该一挡传动齿轮副轮齿承载状况的影响权重与规律,为以改善强度及可靠性为目标的结构方案修改及工艺参数确定提供了重要参考.Finite element（FE） model of transmission＇s first gear pair was built.Based on explicit dynamic theory,transient meshing process of the gear pair under maximum engine output torque was simulated.At the critical spots of the gear teeth＇s surfaces and roots,the amplitudes of main principle stresses and equivalent stresses,as well as their changing patterns were obtained.On the basis of the FE analysis model,the investigation was conducted to find out the influencing weights and changing rules of some important factors on the loading conditions of the gear pair,such as stiffness of gear shaft,assembling error,as well as tooth root fillet radius,etc.The results and conclusions from this research work can provide essential information for structural scheme modification to achieve higher strength and reliability,as well as to determine the processing and assembling parameters.

关 键 词：变速器 齿轮副 有限元 非线性接触 瞬态动力学 

分 类 号：TH132.41[机械工程—机械制造及自动化]