Oil Whirl of Flexible Rotors

Author:

,Parszewski Z.1,Cameron A.2

Affiliation:

1. Docent, Zakłlad Teorii Konstrukcji Maszyn, PAN, Warsaw and Zakłlad Teorii Mechanizmow, Politechnika Łodzka

2. Reader in Mechanical Engineering, Imperial College, London

Abstract

The equations for a flexible rotor in journal bearings are set up and solved, extending the method previously used by Hummel and Cameron. It is shown that if w is the natural elastic frequency of the rotor, A the resonant oil frequency for an infinitely stiff but otherwise identical rotor, then the combined frequency s is given by l/ s2 = 1/Λ2 + 1/ w2. This resonant frequency will usually occur when it equals 1/2 the shaft rotational frequency The frequency calculated by the method given here is applied to a number of cases of large turbines and alternators and found to give quite satisfactory results

Publisher

SAGE Publications

Subject

General Engineering

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Numerical study of nonlinear stability boundaries for orifice-compensated hole-entry hybrid journal bearings;Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology;2019-12-06

2. Alastair Cameron, 1917–2000;Tribology International;2001-02

3. Lubrication and Wear Group: Oil-Whirl Characteristics of a Rigid Rotor in 360° Journal Bearings;Proceedings of the Institution of Mechanical Engineers;1963-06

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