条状润湿表面对面接触限量润滑油膜的影响研究

利用面接触油膜润滑测量系统，研究了条状润湿表面对有限量供油条件下入口区供油分布及润滑油膜厚度的影响. 对玻璃盘润滑轨道两侧进行疏油化处理，形成中央条状润湿区域，在有限量供油条件下测量不同速度下的油膜厚度. 结果表明在表面力驱动下，润滑油向中央条状亲油区域集中，改善了入口区供油，促进了限量供油条件下的油膜形成. 相对油膜厚度随速度的增加呈“S”型变化，同时研究了润滑油黏度及供油量等工作参数对条状润湿轨道作用的影响. 

Influence of Strip-Shaped Wet Surface on Lubrication Films in Slider-on-Disc Conformal Contact under Limited Lubricant Supply

With the test rig for lubricating films in slider-on-disc conformal contact the influences on the inlet oil supply and the film thickness of a strip-shaped wet surface were studied under limited lubricant supply. On the disc, two oleophobic areas were made in such a way that a strip-shaped wet region was generated, and the oil film thickness at different speeds was measured under limited lubricant supply. The results showed that driven by the surface force, the lubricating oil could be collected by the strip-shaped wet region, which improved the oil supply in the inlet area and thus the formation of the oil film under limited lubricant supply. The relative oil film thickness varied in an “S” shape with the increase of speed. The effects of viscosity and oil supply amount on the lubricating film thickness were studied with the strip-shaped wet surface.