海水润滑塑料轴承的时变微观热弹流润滑分析  

The Transient Thermal Micro-Elastohydrodynamic Lubrication Analysis of Seawater-Lubricated Plastic Bearing

作　　者：张丽静[1] 苏海滨 王优强[1] 

机构地区：[1]青岛理工大学,青岛266033 [2]日照港房地产开发公司,日照276826

出　　处：《机械设计与制造》2012年第12期168-170,共3页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51175275)

摘　　要：考虑了时变效应、轴承表面海水润滑膜温度场和两固体表面横向粗糙度等因素,对塑料轴承的弹流润滑问题进行研究。利用压力求解的顺解法及温度求解的逐列扫描技术,得到塑料轴承时变微观热弹流润滑问题的完全数值解。讨论了粗糙度函数幅值和波长及载荷、转速对于海水润滑膜压力及膜厚的影响。数值计算结果表明,粗糙度的几何参数对润滑性能有着不同程度的影响;随载荷的增大,压力增大,膜厚减小;转速对压力影响较小,随转速的增大,膜厚增大。The elastohydrodynamic lubrication（ EHL ）of plastic bearings is studied by considering the transient effect,thermal effect and the solid surface horizontal roughness.A full numerical solution to the problem of the time-dependent thermal line contact micro- elastohydrodynamic lubrication of plastic bear- ning method for temperature rise.The effects of roughness amplitude, roughness wavelength,the load and the speed on the pressure and the film thickness were discussed.Numerical results reveal that the geometric pa- rameters of roughness have different influence on the lubrication performance ;the pressure is increased and the film thickness is decreased with the increase of load;the speed has little effect on pressure while the film thickness is increased greatly with the increase of speed.

关 键 词：海水润滑 塑料轴承 时变效应 微观热弹流 

分 类 号：TH16[机械工程—机械制造及自动化]