Finite-Element Analysis Of The Hybrid Ceramic Ball Bearings Under Running Status

The application foreground of the hybrid-ceramic bearings in industry, the current research status about ceramic bearings home and abroad and some features of the MSC.Marc/Mentat software were introduced. The research progresses of our task team in recent years also were summarized. New idiographic research direction and content were brought out at the basis of former researches. The transition from static analysis to dynamic analysis for hybrid-ceramic ball bearings under running status was carried out successfully, with the friction and running conditions been added.The first part of the research focused on how to make the contact-body move when beening loaded in multi-body model with Marc. Several methods have been offered according to the different moving ways. This paper took the plate-ball contact model for instance to show the steps. The moving plate in this model made the ball roll by the friction between the ball and the plate. And the contact stress, the contact strain and the friction stress of this model were analyzed in this paper.The models of hybrid-ceramic deep groove ball bearings and unidirection thrust ball bearings in running conditions were analyzed with the method introduced before. The paper gave particular instructions at keypoints on how to simplifiy the full-scale model, establish the FEA model, fix the boundary conditions and analyze the results. The dynamic analysis for the 3D model of the hybrid-ceramic ball bearings has settled a firm base for improved analysis.The preparatory research on how to carry out the mechanical-heat coupled analysis considering the heat generated by friction with the Marc/Mentat software has been done. The temperature of some local part of the bearings will rise for the heat generated by fiction when the bearing keeps running for long time under normal operation status. If the temperature rises highly, it will bring obvious influence to the performance of the bearings material. Therefore exploration in this part has some significance for the further study on dynamical design and analysis of the ceramic bearings.