Study on Looseness and Impact - Rub Coupling Faults of a Vertical Dual-Disk Cantilever Rotor- Bearing System

Yan Jun Lu; Zhao Hui Ren; Hong Chen; Nai Hui Song; Bang Chun Wen

doi:10.4028/www.scientific.net/KEM.353-358.2479

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 353-358Study on Looseness and Impact - Rub Coupling...

Study on Looseness and Impact - Rub Coupling Faults of a Vertical Dual-Disk Cantilever Rotor- Bearing System

Abstract:

Because of wrong setting or long-term running of rotating machinery, the looseness may ouur in the bearing seats or bases. And also bring impact and rubbing of rotor-stator, That is the looseness and rub-impact coupling fault. In the paper,a mechanics model and a finite element model of a vertical dual-disk cantilever rotor- bearing system with coupling faults of looseness and rub-impact are set up. Based on the nonlinear finite element method and contact theory, the dynamical characteristices of the system under the influence of the looseness rigidity and impact-rub clearance is studied. The results show that the impact-rub of rotor-stator can reduce the low frequency vibration caused by looseness, and the impact-rub caused by looseness has obvious orientation. Also, the conclusion of diagnosing the looseness and rub-impact coupling faults is given in the end of the paper.

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Periodical:

Key Engineering Materials (Volumes 353-358)

Pages:

2479-2482

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.353-358.2479

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Online since:

September 2007

Authors:

Yan Jun Lu, Zhao Hui Ren, Hong Chen, Nai Hui Song, Bang Chun Wen

Keywords:

Cantilever Rotor-Bearing System, Coupling Fault, Impact-Rub, Impact-Rub Clearance, Looseness Rigidity

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