摘要
研究了由磨损引起的接触表面几何轮廓的改变对点接触润滑效应的影响．引入磨平系数ｒｗ 来表征接触区的磨平区域大小．在０≤ｒｗ ≤１．０ 的范围内，通过不同工况参数下热弹流的完全数值求解，发现最小膜厚随ｒｗ 的增大而减小，中心膜厚随ｒｗ 的增大而增大；而ｒｗ 对油膜最大压力。
The surface geometry in EHL point contact region can be changed owing to wear. The effect of the worn surface geometry on EHL in point contact has been investigated. A dimensionless coefficient r w is defined to represent the relative half width of the flat zone of worn surfaces. Thermal EHL numerical simulations have been performed to investigate the influence of r w on the film thickness as well as pressure, temperature and friction coefficient under different operating parameters. It has been shown that in the range of 0≤ r w≤1.0, the minimum film thickness decreases with r w and the central film thickness increases with r w. Besides, the film thickness is greatly dependent on the value of r w, but the maximum pressure, the maximum temperature and friction coefficient are related with the value of r w to limited extent.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
1999年第3期266-270,共5页
Tribology
基金
山东省自然科学基金
