Published: 20 November 2013

The Quantitative Diagnosis Method of Rubbing Rotor System

Hongliang Yao1
Qi Xu2
Zhaohui Ren3
Bangchun Wen4
1, 2, 3, 4School of Mechanical Engineering and Automation, Northeastern University, No. 11, Lane 3, WenHua Road, HePing District, Shenyang, Liaoning, 110819, China
Corresponding Author:
Qi Xu
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Abstract

The dynamics of the rubbing rotor system is analyzed by applying harmonic balance method. The relationship between harmonic components in the response of the rubbing rotor system and the dynamic stiffness matrix of the fault free rotor system is revealed, based on which a new model based method for rubbing identification is presented. By applying this method, the fault location and rubbing forces of the single rubbing rotor system can be identified by using vibration data of only two nodes, the rubbing locations and rubbing forces of the double rubbing rotor system can be identified by using vibration data of three nodes. The numerical simulations and experiments on the rotor test-rig are carried out to verify the efficiency of the present method.

About this article

Received
Accepted
01 November 2013
Published
20 November 2013