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TECHNICAL PAPERS

Preload Effects of a Guide Bearing on the Metal Temperature and the Shaft Vibration

[+] Author and Article Information
Hyun Cheon Ha

Research and Development Center, HANJUNG, Korea Heavy Industries and Construction Co., Ltd., 555 Guygok-Dong, Changwon, Kyungnam, 641-792, Koreae-mail: hcha@hanjung.co.kr

J. Tribol 123(1), 144-150 (Aug 01, 2000) (7 pages) doi:10.1115/1.1327587 History: Received February 02, 2000; Revised August 01, 2000
Copyright © 2001 by ASME
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References

Figures

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Schematic view of a hydraulic pump-turbine
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Photograph of the test bearing
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Configurations for preloading a pad: (a) non-preloaded (m=0.0); and (b) preloaded (m=0.87).
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Frequency spectra of the shaft vibration for 63 percent generating power: (a) non-preloaded (m=0.0); and (b) preloaded (m=0.87).
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Frequency spectra of the shaft vibration for 100 percent generating power: (a) non-preloaded (m=0.0); and (b) preloaded (m=0.87).
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Overall vibration amplitude measured at the preloaded bearing (m=0.87) versus generating power
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Comparison of the synchronous and subsynchronous whirl vibration measured at the preloaded bearing (m=0.87) versus generating power
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Sketch of the geometry of the eight-pad guide bearing
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Circumferential distribution of predicted film thickness in the mid-plane
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Circumferential distribution of predicted bearing metal temperature in the mid-plane
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Predicted bearing stiffness and bearing metal temperature

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