Thermal-Mechanical Coupled Analysis For Hybrid Ceramic Angular Contact Ball Bearings

This dissertation mainly introduces the current research status about ceramic bearings home and abroad and some features of the ABAQUS software. The kinematical analysis and the heat analysis under running status of the hybrid ceramic angular contact ball bearings are carried out successfully based on the research of our task team in recent years.The first part of the research is about the contact angle of the ball bearings under the axial load with different grids of the model. The contact angle and the contact stress are convergent to the values computed by Matlab software by the grid becoming smaller. And it shows that the load and the boundary conditions are correct during the analysis.This paper analyses the kinematics movement of a point on the surface of the ball based on the static analysis. The analysis contains the rotation by the axis of the ball and the rotation by the axis of the ball bearings. The comparing of the result got from the ABAQUS software and the result computed by Matlab shows that the load and the boundary conditions are feasible.The thermal-mechanical coupled analysis considering the heat generated by friction with the ABAQUS is researched. The temperature of every part got from the fully coupled thermal-stress analysis is added to the model as the initial conditions so as to make the hybrid ceramic angular contact ball bearings achieve to the heat balance in short time under the high speed. If the temperature rises highly, it will bring obvious influence to the performance of the bearings material by comparing the results of the analysis whether there are the boundary conditions of the temperature added on the model.