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《Bearing》 2013-03
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Analysis on Dynamic Characteristics of Inter-Shaft Bearing

Guo Xiang-dong1,Wang Yan-shuang2(1.Luoyang Bearing Science and Technology Co.,Ltd.,Luoyang 471039,China;2.School of Mechatronics Engineering, Henan University of Science and Technology,Luoyang 471003,China)  
A quasi-static analysis model is established for inter-shaft bearing in the dual rotor construction,and Newton-Raphson method is used to solve the model.The load distribution of bearing and the distributions of minimum oil film between rings and rollers are analyzed under different radial loads.The variations of the rollers′spinning angular speeds at different angle positions are discussed,and the variations of the rollers′spinning angular speeds versus the rotational speeds of inner or outer ring are analyzed.The results show that the rollers′spinning angular speed decreases and the number of load roller increases with the increase of radial loads of inter-shaft bearing when the rotational directions of outer and inner ring are same.The minimum oil film thickness between each roller and inner raceway is thinner than that between each roller and outer raceway in loading region.The rollers′ spinning angular speed increases with the increase of the rotational speeds of outer ring,and it decreases with the increase of the rotational speeds of inner ring.
【CateGory Index】: TH133.33
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