New Method for Determining the Preload Magnitude of a Wire Race Ball Bearing
This paper explores a numerical method to calculate the frietionless three-dimensional non-conforming contact problem associated with a wire race ball beating used in a certain aircraft simulating rotary table,for challenging the conventional method on the determination of the preload magnitude.A computer program based on the Hertz elastic contact theory and a mathematical model of two critical loading conditions was performed in MATLAB by using an example of a wire race ball bearing having an approximately 900 mm diameter.The normal contact forces,the contact deformation,the maximum contact pressure,the semi-major axes and the semi-minor axes of contact ellipses of the ball-wire race were computed.The analytic results show that the overturning moment,the pitting corrosion and the shear failure due to combined stresses can be avoided by controlling preload values in the range of 1.132×10-5-1.699×10-4 m.The experimental results are closely in agreement with the theoretical results,and verify the availability of our numerical method.The research provides theoretical support for the development and further application of wire race ball bearings with large diameters.
aircraft simulating rotary table wire race ball bearing non-conforming contact pressure distribution pitting corrosion
Shan Xiaobiao Xie Tao Chen Weishan
School of Mechntronics Engineering,Harbin Institute of Technology,Harbin 150001
国内会议
北京
英文
521-528
2006-09-01（万方平台首次上网日期，不代表论文的发表时间）