Performance Analysis of Auxiliary Bearing based on Four-contact-point Ball Bearing

摘要：

　　The performance of auxiliary bearings based on four-contact-point ball bearings is studied.Firstly,based on Hertz contact theory,the static model of bearing is established to analyse the influence of structural parameters on stress and strain of the contact part,and the selection range of the optimal parameters is given.Then,the mechanical analysis of four-contact-point ball bearing under different loads is carried out,and the variation law of load distribution is studied by theoretical calculation.Finally,the dynamic model of rotor dropping is established to compare the protection effect between four-contact-point ball bearing and angular contact bearing.A test rig is built to carry out the rotor drop experiment under different bearing protection.The results could be referenced for the design of auxiliary bearings in active magnetic bearing system.

关键词： auxiliary bearing active magnetic bearing four-contact-point ball bearing rotor drop

作者: Junyu XIA Longxiang XU Chaowu JIN Chengtao YU

作者单位: College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics, Jiangsu University of Technology,1801 Zhongwu Rd.,Changzhou,China

会议类型: 国际会议

会议名称: the 16th International Symposium on Magnetic Bearings (第十六届国际磁悬浮轴承大会) (ISMB6)

会议地点: 北京

会议语种:英文

页码: 1-8

在线出版日期: 2018-08-13（万方平台首次上网日期，不代表论文的发表时间）