Application of hybrid method to the influence of bearing number on elliptic gas bearing system

Author

Wang, Cheng-Chi ; Chen, Shin-Yong ; Jang, Ming-Jyi ; Liao, Te-Tan

Author_Institution

Dept. of Mech. Eng., Far East Univ., Tainan, Taiwan

fYear

2011

fDate

17-20 Aug. 2011

Firstpage

164

Lastpage

168

Abstract

This paper employs a hybrid numerical method combining the differential transformation method (DTM) and the finite difference method (FDM) to analyze the nonlinear dynamic behavior of a rigid rotor supported by an elliptic gas bearing system (EGBS). The results obtained for the orbits of the rotor center are in good agreement with those obtained using the traditional FDM approach. Moreover, the results presented summarize the changes which take place in the dynamic behavior of the EGBS as the bearing number are increased over the range 2.0 ~ 5.0, and therefore provide a useful insight into the nonlinear dynamics of the bearing system.

Keywords

dynamics; finite difference methods; machine bearings; rotors; bearing number; differential transformation method; elliptic gas bearing system; finite difference method; hybrid numerical method; nonlinear dynamic behavior; rigid rotor; Bifurcation; Dynamics; Frequency division multiplexing; Mathematical model; Nonlinear dynamical systems; Orbits; Rotors; bearing number; differential transformation method; elliptic gas bearing system;

fLanguage

English

Publisher

ieee

Conference_Titel

Fluid Power and Mechatronics (FPM), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-8451-5

Type

conf

DOI

10.1109/FPM.2011.6045750

Filename

6045750