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A Study on the Failure Mode and Accelerated Life Test of the Permanent Magnetic Bearing in Rotating Machine

Author: YaoJiangWei
Tutor: ZhangGuoXiong
School: Tianjin University
Course: Measuring Technology and Instruments
Keywords: Permanent magnet bearings Permanent magnet Alternating magnetic field Accelerated Life
CLC: TH133.3
Type: Master's thesis
Year: 2004
Downloads: 358
Quote: 1
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Abstract


Permanent magnet bearing is an important part of the rotating machinery . In this paper, based on the the permanent bearings of rotating machinery design principles of functionality and reliability , Failure Mode Effects and Criticality Analysis (FMECA ) permanent magnetic bearings of rotating machinery , and reliability design proposed measures to improve the permanent the bearing reliability through the FMECA identify major failure modes and failure factors that affect the reliability of permanent magnetic bearings . Major failure mode for of Rotating Machinery permanent bearing - mechanical internal additional alternating magnetic field causes the demagnetization of permanent magnets , permanent magnets accelerated life test , designed to establish the permanent magnet in alternating magnetic field through the analysis of the mechanism of failure model , under the demagnetization of permanent magnets accelerated life test rig . Short running assessment drawn by the test station : 16.2 years after running under normal operating state corresponds to the rotating machine , the axial magnetic attraction of the permanent magnets and the magnetic radial stiffness performance variation results, and an axial magnetic attraction performance over time decline in the mathematical model . This design provides for of Rotating Machinery permanent bearing life test basis . The creative work involved : through the permanent magnet accelerated life test method , combined with the established test rig design , accelerated life test of the permanent magnetic bearings , and made ??valuable research results .

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > Moving parts > Bearing
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