Contact Analysis On Rolling Bearing

In this paper, a review of the type, function and development process of the rolling bearings and the current situation of research and development on the rolling bearings’ contact stress was made. First, we discoursed bearings’ mechanism analysis and finite element analysis on contact problem. And then, we made contact analysis and optimization design on cylindrical roller bearings. Through demonstration and analysis, we believe that making contact stress analysis and optimization design on bearing by material fatigue limit could reduce bearing’s weight, and also could satisfy bearings’ life and ability requirement.After comparative analysis on the cylindrical roller bearings by Hertz method, numerical finite element analysis method and RomaxDesigner soft, we found that the results are approximate, and the results of finite element analysis and RomaxDesigner soft is more accurate than Hertz method. RomaxDesigner soft remained unaffected to model meshing, and its results is almost same with finite element method, and its computing efficiency is higher than finite element method.In this paper, we also made optimization design on cylindrical roller bearing taking the radial windage of bearing and the correction and number of roller as design variable under this premise that the structure and material and interface dimensions were not changing. Optimization design could reduce the bearings’ weight effectively with the understanding that bearing’s fatigue strength is enough.As above research, we had a more profound acquaintance with roller bearings’ contact stress, and accumulated the experience on computing roller bearings’ contact stress. Moreover, design calculation and optimization design based on the contact stress analysis had more practical value, and it could offer better service for aircraft roller bearings’ application design and research.