Hybrid Model Based Identification of Local Rubbing Fault in Rotor Systems

Qing Kai Han; Tao Yu; He Li; Zhao Ye Qin; Zhi Wei Zhang; Bang Chun Wen

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

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 293-294Hybrid Model Based Identification of Local Rubbing...

Hybrid Model Based Identification of Local Rubbing Fault in Rotor Systems

Abstract:

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.

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Periodical:

Key Engineering Materials (Volumes 293-294)

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355-364

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https://doi.org/10.4028/www.scientific.net/KEM.293-294.355

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Online since:

September 2005

Authors:

Qing Kai Han, Tao Yu, He Li, Zhao Ye Qin, Zhi Wei Zhang, Bang Chun Wen

Keywords:

Fault Diagnosis, Hybrid Model, Rotor System, Rubbing Force

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