Thermal-mechanical Coupling Analysis Of Coated Cylindrical Roller Bearing

The cylindrical roller bearing is widely used in many kinds of heavy load andhigh-speed working conditions. The rise of temperature of roller bearing has a greatimpact on the carrying capacity, work clearance and fatigue life, especially when thespeed of roller bearing is very high. In this paper, the method coating the thin nanometerfilm on Friction Pairs is used to meet usability under various severe conditions. For thecoating state of the cylindrical roller bearing, the temperature field, thethermal-mechanical coupled and the fatigue life are analyzed. The research result has animportant theoretical significance and is valuable to engineering application. Meanwhile,it also can provide certain theoretical guidance for the design of coating bearing.The contact problem of the coating cylindrical roller bearing is discussed. The finiteelement model is built and the numerical simulation is conducted. The effect of factors,including the different way of coating and thickness and material, to the contact stressand contact deformation and friction features, are analyzed based on the results.The temperature field of ordinary bearing is analyzed by using theoretical formulaeand the finite element analysis. The temperature field and thermal-mechanical coupledanalysis of the different way of coating bearings are analyzed as well. The resultsdemonstrate that the temperature of bearing decreases quickly, the range of temperaturedecreases gradually and the contact stress reduced slightly.The fatigue life of the coating cylindrical roller bearing is analyzed under thecombination effect of cycle load and temperature and the result shows that the fatigue lifeof coated bearing meets the requirement.