Abstract:Supposing the temperature distribution is parabolic across oil film thickness,the heat flux is continuous at the solid-liquid interface,a comprehensive thermal model of mixed lubrication was established,which included the convective heat removal and the compressive heat generation at the same time.The point heat source integration method and simplified energy equation were used to determine the temperature distribution of contact surfaces and oil film through iterative method.The results show that,the convection and compression of lubricant have ignorable effect on the temperature when the entraining velocity is very low;however,the effect gradually becomes strong on inlet temperature distribution with the increase of entraining velocity;surface roughness has significant effect on pressure and temperature distribution of the contact area.A method to calculate the temperature distribution of the mating surface and film with the given temperature of one contact surface was presented,which laid the foundation of thermal analysis in lubrication and infrared temperature measurement of the contact area.