| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 770038 | Engineering Failure Analysis | 2009 | 9 Pages |
Abstract
Resonance occurred in the upper bracket of extremely high head Francis hydro-generators due to rotational vibrations. The vibration source was determined from field tests and a finite element analysis (FEA) of the structure. The first order natural frequency of the integrated structure including the upper bracket and the stator frame was then altered using the FEA model. The resonance during overspeed operation was eliminated, with the results verified by field tests.
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Physical Sciences and Engineering
Engineering
Industrial and Manufacturing Engineering
Authors
Yongyao Luo, Zhengwei Wang, Guodong Chen, Zujian Lin,