Steady-state response of continuous nonlinear rotor-bearing systems using analytical approach

被引：4
|
作者：
Zu, JW [1 ]
Ji, ZY [1 ]
机构：
[1] Univ Toronto, Dept Mech & Ind Engn, Toronto, ON M5S 3G8, Canada
来源：
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME | 1998年 / 120卷 / 04期
关键词：
D O I：
10.1115/1.2818463
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A continuous modeling of nonlinear rotor-bearing systems is presented in this paper. The shaft is treated as a distributed parameter system using Timoshenko beam theory. A close form, steady-state response of the system is solved analytically for the first time. For cubic nonlinear bearings, the response is composed of three components, synchronous vibration, subsynchronous, and supersynchronous vibration. The harmonic balance method is used to calculate the nonlinear bearing forces. Two examples of nonlinear rotor-bearing systems are shown to illustrate the analysis procedure and the nonlinear characteristics of the system. Solutions from simplified systems are also derived for comparison.
引用
收藏
页码：751 / 758
页数：8
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