Simulation And Analysis Of Ceramic Ball Bearing

The contact problems of the ball bearing are complex. If the traditional Hertz contact theory is used to calculate the contact stress and frictional force, the solution of contact stress and frictional force is lack of consistency. The compare of Hertz formula with finite element method indicates that it is convenient and precise to calculate with Hertz formula, but the range of application is limited with shape of the parts. The process of finite element analysis is complicated, but the calculation is precise and range of application of it is abroad and it is not limited with shape of the parts. FEA is a good method to solve contact question. Though the 2D methods were often used to analysis the contact problem of bearings,3D methods are more accurate. However how to define the contact conditions and construct the simplified model were still lack researches.The method of 3D contact FEA has been presented on the basis of contact model. At the same time, the traditional Hertz contact theory and analyses of experiments are used to prove that the FEA model used in the paper is accuracy.The static performance of ceramic ball bearing is Researched in this dissertation. The load and deformation characteristics of the rolling bearing under axial and radial loads are studied by using the quasi-dynamic method on the basis of Hertzian contact theory. Also the stiffness in both axial and radial direction, stress and the contact distortion are formulated and calculated. The dissertation also achieved the calculation of ceramic ball bearing and kinematic simulation of the relevant parameters, analysed the relationship of the speed, load, time and stress, load, acceleration vibration in the process of ceramic ball bearing movement. The results show that the rolling movement is basically consistent with the actual situation. Finally, mathematical models for static load is established, ceramic ball bearing diameter, ball numbers, the groove radius of curvature coefficient is optimized by MATLAB. The simulation under different conditions is also the basis of ceramic ball bearing structural design, troubleshooting, and fatigue life.