柔性铰链可倾瓦轴承动静态特性研究  

Static and dynamic characteristics of flexure-pivot tilting pad journal bearings

作　　者：陈淑江[1] 熊文涛 路长厚[1] 马金奎[1] 

机构地区：[1]山东大学机械工程学院高效洁净机械制造教育部重点实验室,济南250061

出　　处：《振动与冲击》2018年第2期236-241,共6页Journal of Vibration and Shock

基　　金：国家自然科学基金(51375275);山东大学基本科研业务费资助(2014YQ017)

摘　　要：针对一种新型的椭圆型柔性铰链可倾瓦轴承,在柔性铰链刚度建模的基础上,通过建立轴瓦油膜厚度模型及轴颈和轴瓦的平衡模型,采用有限差分法及牛顿迭代法,研究了柔性铰链可倾瓦轴承中柔性铰链的旋转刚度对轴承的动静态性能的影响规律。研究结果表明:柔性铰链旋转刚度越小,轴承越接近普通可倾瓦轴承,稳定性越好;并得出了适于柔性铰链可倾瓦轴承应用的柔性铰链旋转刚度参考范围,为这类轴承的应用设计提供了参考。A novel elliptical flexure-pivot tilting pad bearing was introduced here. The model of tilting pad oil film thickness,and the model of journal and tilting pad equilibrium were established based on the flexure hinge stiffness model built here. Using the finite difference method and Newton-Raphson method,the effects of rotational stiffness of flexure hinge on static and dynamic performances of the new bearing were analyzed. The results showed that the smaller the flexure hinge rotational stiffness,the closer to conventional tilting pad bearing the new bearing,the better the new bearing's stability. The optimal rotational stiffness range of flexure hinge was also obtained. The study results provided a reference for the design and application of flexure-pivot tilting pad bearings.

关 键 词：柔性铰链 可倾瓦轴承 旋转刚度 动静态特性 

分 类 号：TH133[机械工程—机械制造及自动化]