Dynamical Behaviors Analysis of the Rotor Model with Coupling Faults and Applications of the TPOD Method

Kuan Lu, Nan Wu, Kangyu Zhang, Chao Fu, Yulin Jin, Yongfeng Yang, Haopeng Zhang

Research output: Contribution to journalArticle

Abstract

The transient proper orthogonal decomposition (TPOD) method is applied for order reduction in the rotor-bearing system with the coupling faults in this paper. A 24 degrees of freedom (DOFs) rotor model supported by a pair of sliding bearings with both crack and rub-impact faults is established by the discrete modeling method. The complexity of dynamic behaviors of the rotor system with the coupling faults is discussed via the comparison of the rotor system with the single fault (crack or rub-impact). The proper orthogonal mode (POM) energy method is proposed to confirm the DOF number of the reduced model. The TPOD method is used in the coupling faults system to obtain the optimal order reduction model based on the POM energy. The efficiency of the order reduction method is verified by comparing the bifurcation behaviors between the original and the reduced system. The TPOD method provides the optimal order reduction model to study the non-linear dynamic characteristics of the complex rotor system with the coupling faults.
Original languageEnglish
Article number7415
Number of pages25
JournalApplied Sciences (Switzerland)
Volume10
Issue number21
Early online date22 Oct 2020
DOIs
Publication statusPublished - 1 Nov 2020

Fingerprint Dive into the research topics of 'Dynamical Behaviors Analysis of the Rotor Model with Coupling Faults and Applications of the TPOD Method'. Together they form a unique fingerprint.

Cite this