Use of dFRFs for Diagnosis of Asymmetric/Anisotropic Properties in Rotor-Bearing System-Reference-Cited by-同舟云学术

Use of dFRFs for Diagnosis of Asymmetric/Anisotropic Properties in Rotor-Bearing System

Published:1996-01-01 Issue:1 Volume:118 Page:64-69
ISSN:1048-9002
Container-title:Journal of Vibration and Acoustics
language:en
Short-container-title:

Author:

Joh Chee-Young¹,Lee Chong-Won²

Affiliation:

1. Agency for Defense Development, P.O. Box 18, Chinhae, Kyeongnam, Korea

2. Center for Noise and Vibration Control (NOVIC), Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Science Town, Taejon 305-701 Korea

Abstract

The diagnostic method, which utilizes the dFRFs defined in the stationary and rotating coordinate systems, is tested with a laboratory flexible rotor-bearing system, in order to verify its effectiveness in detection of the asymmetry in shaft and the anisotropy in stator. The experimental results indicate that the dFRFs can be effectively used for the diagnosis of anisotropy and/or asymmetry in rotor systems by the investigation of two kinds of dFRF estimates using the complex input and output signals defined in the stationary and rotating coordinate systems.

Publisher

ASME International

Subject

General Engineering

Link

http://asmedigitalcollection.asme.org/vibrationacoustics/article-pdf/118/1/64/5732782/64_1.pdf

Reference9 articles.

1. Genta G. , 1988, “Whirling of Unsymmetrical Rotors: A Finite Element Approach Based on Complex Co-ordinates,” J. of Sound and Vibration, Vol. 124, No. 1, pp. 27–53.

2. Inagaki T. , KankiH., and ShirakiK., 1980, “Response Analysis of a General Asymmetric Rotor-Bearing System,” ASME Journal of Mechanical Design, Vol. 102 pp. 147–157.

3. Joh, C. Y., 1993, “Diagnosis of Anisotropy and Asymmetry in Rotating Machinery via Directional Spectral Analysis,” Ph.D. Dissertation, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Taejon, Korea, June.

4. Joh Y. D. , and LeeC. W., 1993, “Excitation Methods and Modal Parameter Identification in Complex Modal Testing for Rotating Machinery,” Int. J. of Analytical and Experimental Modal Analysis, Vol. 8, No. 3, pp. 179–203.

5. Lee C. W. , 1991, “A Complex Modal Testing Theory for Rotating Machinery,” Mechanical Systems and Signal Processing, Vol. 5, No. 2, pp. 119–137.

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