Reducing Lateral Vibration of a Rotor Passing Through Critical Speeds by Phase Modulating-Reference-Cited by-同舟云学术

Reducing Lateral Vibration of a Rotor Passing Through Critical Speeds by Phase Modulating

Published:2003-07-01 Issue:3 Volume:125 Page:766-771
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Wang S.-M.¹,Lu Q.-S.¹²,Twizell E. H.³

Affiliation:

1. Division of Theoretical Mechanics, School of Science, Beijing University of Aeronautics and Astronautics, Beijing 100083, People’s Republic of China

2. and Department of Mathematical Sciences, Brunel University, Uxbridge, Middlesex UB8 3PH, UK

3. Department of Mathematical Sciences, Brunel University, Uxbridge, Middlesex UB8 3PH, UK

Abstract

A method is presented to reduce the lateral vibration amplitude of an unbalanced rotor accelerating or decelerating through its critical speed, by means of modulating the response phase with varying acceleration rate. Theoretical and numerical analysis on the amplitude and the phase characteristics of lateral vibration of a rotor model are made. Numerical results show that when the rotor passes through its critical speed with a modulated phase, the response amplitude can be reduced by 20% or so, compared with the nonmodulated (constant) acceleration case.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Link

http://asmedigitalcollection.asme.org/gasturbinespower/article-pdf/125/3/766/5539635/766_1.pdf

Reference5 articles.

1. Choy, F. K., and Padovan, J., 1987, “Nonlinear Transient Analysis of Rotor-Casing Rub Events,” J. Sound Vib., 113, pp. 529–545.

2. Li, G. X., and Paidoussis, M. P., 1994, “Impact Phenomena of Rotor-Casing Dynamical Systems,” Nonlinear Dyn., 5, pp. 53–70.

3. Yanabe, S., Kanneko, S., and Shibata, N., 1998, “Rotor Vibration due to Collision With Annular Guard During Passage Through Critical Speed,” ASME J. Vibr. Acoust., 120, pp. 549–552.

4. Fearn, R. L., and Millsaps, K., 1967, “Constant Acceleration of an Undamped Simple Vibrator Through Resonance,” J. of Royal Aero. Soc.,Aug, pp. 567–573.

5. Millsaps, K. T., and Reed, G. L., 1998, “Reducing Lateral Vibrations of a Rotor Passing Through Critical Speeds by Acceleration Scheduling,” ASME J. Eng. Gas Turbines Power, 120, pp. 615–620.

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