Research on Vibration Properties of Auxiliary Bearing Cage Used in HTR-10 GT Project

Auxiliary Bearings（ABs）is one of the most important parts in Active Magnetic Bearing（AMB）system,which was used in HTR-10 GT project.This paper uses finite element method to analyze the cen-trifugal stress and free vibration properties of the cage according to its work condition.And different geomet-ric parameters of the cage that has effects on its vibration performance are discussed.The results show that the highest centrifugal stress is in the middle of the cage side sill.The low oder vibration modes of the cage can be induced when the auxiliary bearings are working.Proper geometric parameters and ball pocket number can enhance the performance of the cage.