Influence of Impact Load on Dynamic Characteristics of Plastic Cage in Railway Axle Bearing
HUANG Yun-sheng1, DENG Si-er1,2,3, ZHANG Wen-hu3, HU Jie1,3, SUN Li-ming4,MA Zikui5
1. School of Mechatronic Engineering, Henan University Science and Technology, Luoyang 471003, China;
2. Collaborative Innovation Center of Major Machine Manufacturing in Liaoning, Liaoning 116024, China
3. School of Mechatronic Engineering, Northwestern Polytechnical University, Xi’an 710071, China;
4. Luoyang Bearing Science and Technology Co. , LTD, Luoyang 471039, China;
Abstract:Besides supporting the direct heavy load above of the primary suspension, railway axle box bearing also bear the impact load passed from wheel/rail interaction because of track irregularity. The cage bridge fracture because of impact load is one of the main factors leading to the bearing early invalid. The influence of impact from wheel flat to vehicle system is analyzed, which will be the boundary condition of bearing dynamics input. The discrete element approach is used to model elastic cage. The influence from impact load to axle bearing cage dynamic characteristics/contact force between roller and cage/stress distribution of cage is researched. The results show that the contact force and frequency between roller and cage increase significantly with the increase of impact acceleration, which will speed up the fatigue failure of cage. It can be judged from the strength analysis of cage that the external heavy impact acceleration from wheel/rail interaction will lead to the instant fracture of cage bridge.
黄运生1,邓四二1,2,3,张文虎3,胡洁1,3,孙立明4,马子魁5. 冲击载荷对铁路轴箱轴承塑料保持架动态性能影响研究[J]. 振动与冲击, 2018, 37(1): 172-180.
HUANG Yun-sheng1, DENG Si-er1,2,3, ZHANG Wen-hu3, HU Jie1,3, SUN Li-ming4,MA Zikui5. Influence of Impact Load on Dynamic Characteristics of Plastic Cage in Railway Axle Bearing. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(1): 172-180.
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