Hybrid Model Based Identification of Local Rubbing Fault in Rotor Systems

Abstract:

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A quantitative identification procedure for local rubbing fault in rotor systems based on a hybrid model is proposed. The hybrid model combines finite element model of rotor and rigid discs, online identified oil film stiffness and elastic supports. The identification algorithm of oil film parameters is stated in detail. The hybrid model based diagnosis process for local rubbing fault is described with assumption of periodic rubbing forces. With the help of modal expansion technique, the estimated rubbing forces at each node along rotor are checked for the rubbing position. The estimated rubbing forces at ascertained position are then used in fault severity assessing quantitatively next. These approaches have been tested successfully on a test rig with single rotor double discs.

Info:

Periodical:

Key Engineering Materials (Volumes 293-294)

Edited by:

W.M. Ostachowicz, J.M. Dulieu-Barton, K.M. Holford, M. Krawczuk and A. Zak

Pages:

355-364

DOI:

10.4028/www.scientific.net/KEM.293-294.355

Citation:

Q. K. Han et al., "Hybrid Model Based Identification of Local Rubbing Fault in Rotor Systems", Key Engineering Materials, Vols. 293-294, pp. 355-364, 2005

Online since:

September 2005

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Price:

$35.00

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