Yoo, S.Y.
Kim, W.Y.
Kim, S.J.
Lee, W.R.
Bae, Y.C.
Noh, M.
2024-01-20T17:05:03Z
2024-01-20T17:05:03Z
2021-09-02
2011-04
1226-4873
https://pubs.kist.re.kr/handle/201004/130470
In this paper, we describe a process for optimally designing a ring-type permanent magnet thrust bearing. The bearing consists of two sets of permanent magnet rings. One set is located inside the other set An axial offset between the two sets creates axial force, which results in a thrust bearing function. In order to realize an optimal design of the bearing where the required load capacity of the bearing is achieved with the least magnet volume, we derived analytical design equations by adopting the equivalent current sheet (ECS) method We considered the following two types of magnet anays: axial arrays and Halbach arrays. These two types of arrays are optimized using the analytical design equations. The results of the optimization are verified using three dimensional (3D) finite element analyses (FEA). The results show that the Halbach array can achieve the required load capacity with less amount of permanent magnet than the axial array does. The efficacy of the ECS method is also verified by using 3D FEA. It is found that die accuracy of ECS method is more sensitive to the underlying assumptions for the Halbach array than for the axial array. ？ 2011 The Korean Society of Mechanical Engineers.
Korean
Analytical design
Axial forces
Equivalent currents
Halbach array
Load capacity
Magnet volume
Optimal design
Passive magnetic bearing
Three dimensional (3D) finite element analysis
Thrust bearing functions
Bearing capacity
Bearings (structural)
Design
Magnetic bearings
Magnetic levitation
Magnetic levitation vehicles
Optimal systems
Optimization
Permanent magnets
Three dimensional
Thrust bearings
Optimal design of permanent magnet thrust bearings
Article
10.3795/KSME-A.2011.35.4.353
1
Transactions of the Korean Society of Mechanical Engineers, A, v.35, no.4, pp.353 - 358
Transactions of the Korean Society of Mechanical Engineers, A
35
4
353
358
scopus
kci
ART001537491
2-s2.0-79955011720
Article
Analytical design
Axial forces
Equivalent currents
Halbach array
Load capacity
Magnet volume
Optimal design
Passive magnetic bearing
Three dimensional (3D) finite element analysis
Thrust bearing functions
Bearing capacity
Bearings (structural)
Design
Magnetic bearings
Magnetic levitation
Magnetic levitation vehicles
Optimal systems
Optimization
Permanent magnets
Three dimensional
Thrust bearings
Magnetic levitation
Optimal design
Passive magnetic bearing
Thrust bearing