Generalized polynomial expansion method for the dynamic analysis of rotor-bearing systems

Journal Article · Wed Mar 31 23:00:00 EST 1993 · Journal of Engineering for Gas Turbines and Power; (United States)

DOI:https://doi.org/10.1115/1.2906696· OSTI ID:6504998

Shiau, T N; Hwang, J L ^[1]

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1. National Cheng Kung Univ., Tainan (Taiwan, Province of China)

The determination of critical speeds and modes and the unbalance response of rotor-bearing systems is investigated with the application of a technique called the generalized polynomial expansion method (GPEM). This method can be applied to both linear and nonlinear rotor systems; however, only linear systems are addressed in this paper. Three examples including single spool and dual rotor systems are used to demonstrate the efficiency and the accuracy of the method. The results indicate a very good agreement between the present method and the finite element method (FEM). In addition, computing time will be saved using this method in comparison with the finite element method.

• OSTI ID: 6504998
• Journal Information: Journal of Engineering for Gas Turbines and Power; (United States), Journal Name: Journal of Engineering for Gas Turbines and Power; (United States) Vol. 115:2; ISSN JETPEZ; ISSN 0742-4795
• Country of Publication: United States
• Language: English

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