定量供油条件下面接触副润滑特性研究

In this paper, the theoretical model of fluid lubricant of a flat-on-flat contact is established under condition of quantitative oil supply. The characteristics of film thickness-velocity in surface contact pair and the effect of various operating parameters on contact zone lubrication are numerical analysed. Research results show that under quantitative oil supply, the phenomenon of starved oil can appear in a certain entrainment speed, and along with the increase of entrainment speed is gradually deteriorated. In addition, the exit film thickness first increases and then gradually achieves stability with the increase of entrainment speed. Finally the value of film thickness is close to the supply oil film thickness, which is in qualitative agreement with the experimental results. The less the quantity of oil supply is, or the greater oil viscosity is, the smaller the film thickness changes with the increase of entrainment speed.