Identification of Stiffness and Damping of Auto-eliminating Clearance Auxiliary Bearing Devices based on Finite Element Method

摘要：

　　In order to study the dynamic supportive stiffness and damping of auto-eliminating clearance auxiliary bearing devices(ACABD)after the rotor falls,this paper proposed an identification method of stiffness and damping based on finite element method.Fist,the model of the rotor supported by ACABD and the feasibility of the method was verified by simulation.Then,the test bench of magnetic bearing system contained the ACABD was designed.And the unbalanced responses were obtained by the experiment method of unbalanced excitation.In the end,the actual supportive stiffness and damping of ACABD were obtained by the parameter identification method based on finite element method.The results indicate that during the moderation process from 500Hz to 20Hz after the drop of the rotor,the values of supportive stiffness and damping of ACABD change continually,which generally decrease with the rotational speed.

关键词： supporting characteristics ACABD finite element method unbalanced response

作者: Guochang Li Chaowu Jin Jin Zhoua Junyu Xia

作者单位: College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,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: 1-6

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）