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.
Authors
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1155/2011/973740
- Category
- Publikacja w czasopiśmie
- Type
- artykuł w czasopiśmie indeksowanym TR Master Journal List
- Language
- angielski
- Publication year
- 2011
