Impact of lubricant traction coefficient on cage's dynamic characteristics in high-speed angular contact ball bearing |
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| Authors: | Zhang Wenhu Deng Sier Chen Guoding Cui Yongcun |
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| Institution: | 1. School of Mechatronics Engineering, Northwestern Polytechnical University, Xi'an 710071, China;2. School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003, China;Collaborative Innovation Center of Major Machine Manufacturing in Liaoning, Dalian 116024, China |
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| Abstract: | In this paper, the formulas of elasto-hydrodynamic traction coefficients of three Chinese aviation lubricating oils, 4109, 4106 and 4050, were obtained by a great number of elasto-hydrodynamic traction tests. The nonlinear dynamics differential equations of high-speed angular contact ball bearing were built on the basis of dynamic theory of rolling bearings and solved by Gear Stiff (GSTIFF) integer algorithm with variable step. The impact of lubricant traction coeffi-cient on cage's dynamic characteristics in high-speed angular contact ball bearing was investigated, and Poincare map was used to analyze the impact of three types of aviation lubricating oils on the dynamic response of cage's mass center. And then, the period of dynamic response of cage's mass center and the slip ratio of cage were used to assess the stability of cage under various working con-ditions. The results of this paper provide the theoretical basis for the selection and application of aviation lubricating oil. |
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| Keywords: | Dynamic characteristic High-speed angular contact ball bearing Lubricant traction coefficient Poincare map Stability |
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