![](/images/graphics-bg.png)
Nonlinear Vibration Analysis for a Jeffcott Rotor with Seal and Air-Film Bearing Excitations
Joint Authors
Source
Mathematical Problems in Engineering
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2009-11-30
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
The nonlinear coupling vibration and bifurcation of a high-speed centrifugal compressor with a labyrinth seal and two air-film journal bearings are presented in this paper.
The rotary shaft and disk are modeled as a rigid Jeffcott rotor.
Muszynska's model is used to express the seal force with multiple parameters.
For air-film journal bearings, the model proposed by Zhang et al.
is adopted to express unsteady bearing forces.
The Runge-Kutta method is used to numerically determine the vibration responses of the disk center and the bearings.
Bifurcation diagrams for transverse motion of the rotor are presented with parameters of rotation speed and pressure drop of the seal.
Multiple subharmonic, periodic, and quasiperiodic motions are presented with two seal-pressure drops.
The bifurcation characteristics show inherent interactions between forces of the air-film bearings and the seal, presenting more complicated rotor dynamics than the one with either of the forces alone.
Bifurcation diagrams are obtained with parameters of pressure drop and seal length determined for the sake of operation safety.
American Psychological Association (APA)
Wang, Yuefang& Wang, Xiaoyan. 2009. Nonlinear Vibration Analysis for a Jeffcott Rotor with Seal and Air-Film Bearing Excitations. Mathematical Problems in Engineering،Vol. 2010, no. 2010, pp.1-14.
https://search.emarefa.net/detail/BIM-488789
Modern Language Association (MLA)
Wang, Yuefang& Wang, Xiaoyan. Nonlinear Vibration Analysis for a Jeffcott Rotor with Seal and Air-Film Bearing Excitations. Mathematical Problems in Engineering No. 2010 (2010), pp.1-14.
https://search.emarefa.net/detail/BIM-488789
American Medical Association (AMA)
Wang, Yuefang& Wang, Xiaoyan. Nonlinear Vibration Analysis for a Jeffcott Rotor with Seal and Air-Film Bearing Excitations. Mathematical Problems in Engineering. 2009. Vol. 2010, no. 2010, pp.1-14.
https://search.emarefa.net/detail/BIM-488789
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-488789