Periodic response of multi-disk rotors with bearing clearances

The forced steady state response of a multi-disk rotor system involving a clearance at one of the bearings is determined by using a harmonic balance approach. The impedance method is applied to each of the harmonic steady state components in order to reduce the system to its displacement at the non-...

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Bibliographic Details
Published in:Journal of sound and vibration 1991-02, Vol.144 (3), p.381-395
Main Authors: Kim, Y.B., Noah, S.T., Choi, Y.S.
Format: Article
Language:English
Subjects:
Applied sciences
Bearings, bushings, rolling bearings
Civil Engineering
Drives
Dynamique, vibrations
Engineering Sciences
Exact sciences and technology
Mechanical Engineering
Mechanical engineering. Machine design
Mechanics
Structural mechanics
Vibrations
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Summary:The forced steady state response of a multi-disk rotor system involving a clearance at one of the bearings is determined by using a harmonic balance approach. The impedance method is applied to each of the harmonic steady state components in order to reduce the system to its displacement at the non-linear bearing support. The results reveal the interrelated roles of the bearing clearance, mass eccentricity and side force in producing dangerous subharmonics. The significant effects of the strong non-linearity of a bearing clearance are studied as related to the various system parameters. The results show that the approach developed in this study is computationally superior to numerical integration methods in analyzing multi-disk rotor systems with strong non-linearity.
ISSN:0022-460X
1095-8568
DOI:10.1016/0022-460X(91)90558-2