摘要
箔片轴承中顶箔与波箔之间的非线性接触力学问题具有非线性和时变性,建立考虑非线性接触的理论模型研究箔片结构的力学行为,采用增量迭代法和牛顿-拉弗森法求解系统平衡方程,通过该模型进行转子推拉仿真获得箔片结构变形量与响应力之间的关系以及箔片的能量耗散。结果表明:摩擦是箔片结构产生滞回行为的主要因素,随着摩擦因数的增大,箔片结构刚度增大,滞回曲线面积也随之增大;在一个加载、卸载回路中,加载过程比卸载过程具有更高的静载力;靠近固定端的波箔片比靠近自由端的波箔片具有更高的刚度。
The nonlinear mechanics problem of contact between top foil and bump foil in foil bearings is nonlinear and time-varying.A theoretical model considering contact nonlinearity is established to study the mechanical behavior of foil structure.The incremental iteration method and Newton-Raphson method are used to solve the system equilibrium equations.The relationship between deformation amount and response force of foil structure and energy dissipation of foil are obtained through rotor push-pull simulation using this model.The results show that:friction is a main factor for hysteretic behavior in foil structure,with the increase of friction coefficient,the stiffness of foil structure increases,and the area of hysteretic curve also increases;in a loading and unloading circuit,the loading process has a higher static load capacity than unloading process;the bump foil near fixed end has higher stiffness than that near free end.
作者
黎荣健
肖曙红
张岩
LI Rongjian;XIAO Shuhong;ZHANG Yan(School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006,China)
出处
《轴承》
北大核心
2023年第10期24-30,共7页
Bearing
关键词
滑动轴承
箔片轴承
气体动压轴承
滞回曲线
能量耗散
plain bearing
foil bearing
aerodynamic bearing
hysteretic curve
energy dissipation
