A Dynamic Analysis of a Flexible Rotor in Ball Bearings with Nonlinear Stiffness Characteristics
This paper presents an effective analysis approach for a flexible rotor in ball bearings with nonlinear stiffness characteristics to obtain realistic dynamic behavior results. The ball bearing is modeled in five degrees of freedom and the nonlinear stiffness characteristics of the bearing are comple...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
1997-01-01
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| Series: | International Journal of Rotating Machinery |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1155/S1023621X97000080 |
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| Summary: | This paper presents an effective analysis approach for a flexible rotor in ball bearings with
nonlinear stiffness characteristics to obtain realistic dynamic behavior results. The ball bearing
is modeled in five degrees of freedom and the nonlinear stiffness characteristics of the
bearing are completely described as functions of combined loads and spin speed. For dynamic
behavior analysis of the nonlinear rotor-bearing system, a transfer-matrix method is
iteratively used until the bearing displacements and the shaft displacements at every bearing
location converge to the same values. The results show that the nonlinear stiffness characteristics
of ball bearings significantly influence system dynamic behaviors and the proposed
analysis approach for the nonlinear rotor-bearing system is effective. |
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| ISSN: | 1023-621X |