轴-轴承系统动力学摩擦学弹性力学耦合分析  

Research on Integrated Effects of Dynamics, Tribology and Elastic Mechanics of Shaft-bearing System on Variable Load

作　　者：何芝仙[1] 桂长林[1] 李震[2] 孙军[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院 [2]安徽工程科技学院机械工程系

出　　处：《农业机械学报》2007年第9期116-121,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(项目编号:50175023)

摘　　要：采用动力学仿真软件ADAMS和有限元分析软件ANSYS,结合手工编程的方法,研究了变载荷作用下轴-轴承系统动力学、摩擦学、弹性力学(轴的刚度和强度)耦合分析问题,重点讨论正弦载荷作用下轴-轴承系统的共振响应和考虑动态油膜压力分布时的轴颈表面动应力计算。计算结果表明,动应力在轴颈表面沿轴向和周向的分布与油膜压力沿轴向和周向的分布密切相关;动应力随时间的变化与轴-轴承系统的动力学响应密切相关。Multidisciplinary coupling among dynamics, tribology and elastic mechanics （strength and stiffness of shaft） on a shaft-bearing system with variable load, was studied in this paper. Special software （ADAMS and ANSYS） assisted with self-designed programs were applied to solve the problem. Dynamic responses of the shaft-bearing system were calculated on sine exciting force, and the relevant dynamic oil pressure distribution was obtained by solving Reynolds＇ equation according to the trajectories of shaft center. Dynamical stress on journal surface considering the dynamic oil pressure was calculated by the APDL （ANSYS parameter design language）. Numerical results showed that dynamic stress distributing on the journey surface is related to the dynamic oil pressure and the variation of stress about time is determined by the dynamic response.

关 键 词：轴-轴承系统 变载荷 耦合 动力学 摩擦学 弹性力学 

分 类 号：TH11[机械工程—机械设计及理论]