供油量对点接触表面微织构润滑性能的影响  

Effects of Oil Feeding on Lubrication Performance in Point Contacts of Micro-textured Surfaces

作　　者：李珊珊[1] 王文中[1] 孔凌嘉[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081

出　　处：《摩擦学学报》2012年第5期444-451,共8页Tribology

基　　金：国家自然科学基金(50975029);国家重点基础研究发展规划项目(973)(2011CB706602);新世纪优秀人才支持计划资助~~

摘　　要：采用球盘接触模型,以入口油层厚度为输入变量,基于统一Reynolds方程法建立润滑分析模型,研究了供油量对点接触表面微织构润滑性能的影响.数值计算结果显示:供油量显著影响接触区油膜厚度;微织构能改善摩擦副的润滑摩擦性能;严重乏油时接触区内微坑会产生气穴现象;瞬态下,微织构在乏油时较充分供油时改善润滑的效果明显.Based on ball -disc contact model, taking the thickness of the inlet oil -supply layer as an input parameter, the influences of quantity of the supplied oil on lubrication performance in point contacts of micro - textured surfaces are investigated based on the unified Reynolds equation approach. The simulation results show that quantity of the supplied oil has a great effect on the film thickness in the contact area. Micro - texture could improve lubrication performance of tribo - pairs. Local cavitation occurs in the pits when the degree of the starvation is very serious. In transition state, the effect of the micro - textures on improving lubrication is more obvious in starved condition than in fully - flooded condition.

关 键 词：供油量 点接触 微织构 润滑性能 乏油 

分 类 号：TH117.2[机械工程—机械设计及理论]