三环减速器热弹耦合动力学特性研究  

Study on the Dynamics Characteristic of Three- ring Gear Reducer with Thermo- elastic Coupling

作　　者：温芳[1] 庞毅[1] 陈继照 刘文斌[1] 

机构地区：[1]广西大学机械工程学院,广西南宁530004

出　　处：《机械传动》2015年第8期22-25,共4页Journal of Mechanical Transmission

基　　金：广西大学博士启动基金(XBZ140093)

摘　　要：针对三环减速器存在的发热严重、振动大、噪声高等问题,建立了齿轮-轴-轴承-箱体系统热弹耦合有限元模型,得出三环减速器整机的温度场,结果表明,输入轴行星轴承是主要的发热源。在此基础上,将热单元转换为结构单元,加载模型的节点温度,得出整机固有频率和振型。并施加齿轮内部动态激励,进行整机动态响应的数值仿真,结果表明,考虑热弹耦合后,固有频率有所降低,箱体表面的振动位移和加速度有所增大。为三环减速器的参数优化以及散热系统的合理设计提供一定的理论依据。Aiming at the severe fever,vibration and loud noise and so on are the outstanding problems of three- ring gear reducer,a finite element model of gear- rotor- bearing- housing system with thermo- elastic coupling is established. The temperature field of the three- ring gear reducer is obtained,the results show that the input shaft bearings is the main heat source. Based on the result,the thermal elements is converted to the structural elements in ANSYS,the node temperature of the model is load,then the natural frequency and vibration model is obtained. Then the internal gear dynamic incentive is applied to carry out the numerical simulation of dynamic response. The results show that,after taking thermo- elastic coupling into consideration,the natural frequency is reduced,the vibration displacement of housing and acceleration are increased. A certain theoretical basis for the parameter optimization and reasonable design of heat dissipating system of the three- ring gear reducer is provided.

关 键 词：三环减速器 热弹耦合 模态 动态响应 有限元 

分 类 号：TH132.46[机械工程—机械制造及自动化]