Effect of geometry change of rough point contact due to lubricated sliding wear on lubrication
The geometry change of a single asperity due to lubricated wear was studied by an experimental simulation with a ball-on-disc set up. The wear leads to the formation of a tilted section at the tip of the ball, which is proved to be due to the presence of oil during the process. The effect of the geometry change of rough surface contacts due to wear was examined by a micro-EHL analysis. A non-Newtonian visco-plastic fluid model which includes the effect of a limiting shear strength was used.