Experimental Investigation on the Multi-Decked Protuberant Gas Foil Journal Bearing
In this paper, a new kind of gas foil journal bearing using multi-decked protuberant foils as elastic support structure has been developed. Experimental test on the multi-decked protuberant foil journal bearing has been conducted on the high speed turboexpander. The maximum speed of 25 mm diameter r...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Japan Society of Mechanical Engineers
2013-11-01
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| Series: | Journal of Advanced Mechanical Design, Systems, and Manufacturing |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jamdsm/7/4/7_791/_pdf/-char/en |
| Summary: | In this paper, a new kind of gas foil journal bearing using multi-decked protuberant foils as elastic support structure has been developed. Experimental test on the multi-decked protuberant foil journal bearing has been conducted on the high speed turboexpander. The maximum speed of 25 mm diameter rotor reached as high as 100 krpm. Meanwhile, at the same gas supply pressure, the rotor speed is higher in speed-down process than that in speed-up process due to the coulomb friction between the foils. In the whole test, the subsynchronous whirl can be suppressed effectively using the new structure. This all metal hydrodynamic gas foil bearing may be a promising candidate in cryogenic systems. |
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| ISSN: | 1881-3054 |