Influence of interference fit on the dynamic characteristics of magnetic levitation rotors

LI Peng1,2, WU Huachun1,2*, CUI Ruifang1,2, XIONG Zhenyu1,2

1. 1. School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China;
2. Hubei Provincial Engineering Technology Research Center for Magnetic Suspension, Wuhan 430070, Hubei, China
• Received:2017-12-15 Online:2018-04-20 Published:2017-12-15

Abstract: According to the too simple model and the large error problem of modal analysis for traditional magnetic levitation rotors, the contact effect between the rotors was considered. The contact finite element method was used to establish the finite element model of the interference fit of the magnetic levitation rotors. With the combination of theory and static analysis, normal stiffness factor was optimized. By modifying the friction coefficient, the relationship between the interference coefficient and the friction coefficient was obtained, which could provide reference for the similar rotors' accurately analysis of modal. A comparative analysis was made on whether the contact effect was considered for the magnetic levitation rotor. The results showed that it could make the model and the solution more accurate to consider the contact effect.

CLC Number:

• TH113
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