Thermal Analysis of Cylindrical Roller Bearing Considering Thermo-Mechanical Coupling

Abstract

Thermal characteristic is important performance of the bearing, which reflects the friction characteristics of bearing. Thermal characteristics of bearing will change along with internal behavior when the bearing fails. There is a very complex coupling relationship. It is an important implication for the thermal analysis cylindrical roller bearing considering thermo-mechanical coupling. A model of heat generation for cylindrical roller bearing considering thermo-mechanical coupling is established based on the method of quasi-static and thermal network of bearing to solve the complex thermo-mechanical coupling of bearing. And then, the variation of complex thermal-mechanical characteristics such as friction torque, contact force and temperature for cylindrical roller bearing with wear failure is analyzed. The results show that the heat generation characteristics of the bearing are strongly coupled with the internal contact force and clearance. And the decrease of bearing clearance and the increment of contact force and friction torque, even rotor binding.with the increasing of wear degree.