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Abstract
An aerodynamic journal bearing that is capable of self-generating squeeze-film pressure is presented and its dynamic characteristics investigated numerically and experimentally. A numerical method based on a time marching static model was applied to assess the orbit trajectory path of the rotor upon a perturbation. Experimental results were obtained to validate the effect of the self- generated squeeze-film pressure on the stability of the rotor. Analyzing the Fast Fourier Transform (FFT) responses of the rotor orbits enabled identification of self-excited whirling instabilities. Both numerical and experimental results showed that increasing the squeeze-film effect of the bearing could raise the threshold speed of instability.
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Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1155/2011/973740
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie indeksowanym TR Master Journal List
- Published in:
-
Advances in Tribology
no. 2011,
pages 1 - 10,
ISSN: 1687-5915 - Language:
- English
- Publication year:
- 2011
- Bibliographic description:
- Stolarski T.: Running characteristics of aerodynamic bearing with self-lifting capability at low rotational speed// Advances in Tribology. -Vol. 2011., (2011), s.1-10
- DOI:
- Digital Object Identifier (open in new tab) 10.1155/2011/973740
- Verified by:
- Gdańsk University of Technology
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