摘要
齿轮啮合传动的内部激励是引起齿轮振动和噪声的关键因素,以某8挡自动变速器中一对常啮合斜齿轮为研究对象,对其啮合传动过程的内部激励开展全面深入研究,包括齿面接触状态、时变啮合刚度、误差激励和啮合冲击。采用有限元法分析斜齿轮的静态和动态接触过程,得到齿面接触应力的大小及分布;采用接触线长度变化表示时变啮合刚度的理论方法和采用有限元仿真的方法得到斜齿轮传动的时变啮合刚度曲线;采用理论计算和有限元法分析斜齿轮误差激励,包含啮合误差、静态传递误差和动态传递误差;采用有限元法分析啮合冲击,得到齿轮传动过程的齿根应力;采用有限元法计算齿面接触线上应力分布。研究为斜齿轮传动状态的改善提供了基础。
The internal excitation of gear meshing transmission is the key factor that causes gear vibration and noise.Taking a pair of constant meshing helical gears in an 8-speed automatic transmission as the research object,the internal excitation of meshing transmission process is studied thoroughly,including the tooth surface contact state,time-varying meshing stiffness,error excitation and meshing impact.The finite element method is used to analyze the static and dynamic contact process of helical gears to get the magnitude and distribution of tooth contact stress.The change of contact line length is used to represent the time-varying meshing stiffness.The time-varying meshing stiffness of helical gear is obtained by theoretical analysis and finite-element simulation.Theoretical analysis and finite-element method are used to analyze the error excitation of helical gears,including the meshing error,the static transmission error and the dynamic transmission error.The finite-element method is used to analyze the meshing impact to obtain the root stress of gear transmission.The stress distribution on tooth contact line is calculated by the finite-element method.The above research lays the foundation for the improvement of helical gear transmission state.
作者
岳会军
宋媛媛
刘洋
徐向阳
Yue Huijun;Song Yuanyuan;Liu Yang;Xu Xiangyang(Beijing Institute of Space Launch Technology,Beijing 100076,China;Transport Planning and Research Institute,Ministry of Transport,Beijing 100028,China;School of Transportation Science and Engineering,Beihang University,Beijing 100191,China)
出处
《机械传动》
CSCD
北大核心
2018年第10期24-28,34,共6页
Journal of Mechanical Transmission
基金
国家科技支撑计划:节能环保8AT自动变速器关键技术及产业化(编号:2011BAG09B00)
关键词
斜齿轮
啮合接触分析
啮合刚度
误差激励
啮合冲击
Helical gear
Meshing contact analysis
Meshing stiffness
Error excitation
Meshing impact
