Dynamical analysis of hollow-shaft dual-rotor system with circular cracks

Yongfeng Yang; Jianjun Wang; Yanlin Wang; Chao Fu; Qingyang Zheng; Kuan Lu

doi:10.1177/1461348420948287

Dynamical analysis of hollow-shaft dual-rotor system with circular cracks

Yongfeng Yang, Jianjun Wang, Yanlin Wang, Chao Fu, Qingyang Zheng, Kuan Lu

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

In this paper, we considered a dual-rotor system with crack in shaft. The influence of circular crack in hollow shaft on dynamical response was studied. The equations of motion of 12 elements dual-rotor system model were derived. Harmonic balance method was employed to solve the equations. The critical speed and sub-critical speed responses were investigated. It was found that the circular crack in hollow shaft had greater influence on the first-backward critical speed than the first-forward critical speed. Owing to the influence of crack, the vibration peaks occurred at the 1/2, 1/3 and 1/4 critical speeds of the rotor system, along with a reduction in sub-critical speeds and critical speeds. The deeper crack away from the bearing affected the rotor more significantly. The whirling orbits, the time-domain responses and the spectra were obtained to show the super-harmonic resonance phenomenon in hollow-shaft cracked rotor system.

Original language	English
Pages (from-to)	1227-1240
Number of pages	14
Journal	Journal of Low Frequency Noise Vibration and Active Control
Volume	40
Issue number	3
Early online date	1 Sep 2020
DOIs	https://doi.org/10.1177/1461348420948287
Publication status	Published - 1 Sep 2021
Externally published	Yes

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title = "Dynamical analysis of hollow-shaft dual-rotor system with circular cracks",

abstract = "In this paper, we considered a dual-rotor system with crack in shaft. The influence of circular crack in hollow shaft on dynamical response was studied. The equations of motion of 12 elements dual-rotor system model were derived. Harmonic balance method was employed to solve the equations. The critical speed and sub-critical speed responses were investigated. It was found that the circular crack in hollow shaft had greater influence on the first-backward critical speed than the first-forward critical speed. Owing to the influence of crack, the vibration peaks occurred at the 1/2, 1/3 and 1/4 critical speeds of the rotor system, along with a reduction in sub-critical speeds and critical speeds. The deeper crack away from the bearing affected the rotor more significantly. The whirling orbits, the time-domain responses and the spectra were obtained to show the super-harmonic resonance phenomenon in hollow-shaft cracked rotor system.",

keywords = "circular cracks, critical speed, hollow-shaft, Rotor, super-harmonic",

author = "Yongfeng Yang and Jianjun Wang and Yanlin Wang and Chao Fu and Qingyang Zheng and Kuan Lu",

note = "Funding Information: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study was funded by National Natural Science Foundation of China (grant number 11972295), the Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University (grant number VCAME201803), and Graduate Innovation Fund of Northwestern Polytechnical University (grant number CX2020124). Publisher Copyright: {\textcopyright} The Author(s) 2020. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",

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doi = "10.1177/1461348420948287",

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T1 - Dynamical analysis of hollow-shaft dual-rotor system with circular cracks

AU - Yang, Yongfeng

AU - Wang, Jianjun

AU - Wang, Yanlin

AU - Fu, Chao

AU - Zheng, Qingyang

AU - Lu, Kuan

N1 - Funding Information: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study was funded by National Natural Science Foundation of China (grant number 11972295), the Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University (grant number VCAME201803), and Graduate Innovation Fund of Northwestern Polytechnical University (grant number CX2020124). Publisher Copyright: © The Author(s) 2020. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/9/1

Y1 - 2021/9/1

N2 - In this paper, we considered a dual-rotor system with crack in shaft. The influence of circular crack in hollow shaft on dynamical response was studied. The equations of motion of 12 elements dual-rotor system model were derived. Harmonic balance method was employed to solve the equations. The critical speed and sub-critical speed responses were investigated. It was found that the circular crack in hollow shaft had greater influence on the first-backward critical speed than the first-forward critical speed. Owing to the influence of crack, the vibration peaks occurred at the 1/2, 1/3 and 1/4 critical speeds of the rotor system, along with a reduction in sub-critical speeds and critical speeds. The deeper crack away from the bearing affected the rotor more significantly. The whirling orbits, the time-domain responses and the spectra were obtained to show the super-harmonic resonance phenomenon in hollow-shaft cracked rotor system.

AB - In this paper, we considered a dual-rotor system with crack in shaft. The influence of circular crack in hollow shaft on dynamical response was studied. The equations of motion of 12 elements dual-rotor system model were derived. Harmonic balance method was employed to solve the equations. The critical speed and sub-critical speed responses were investigated. It was found that the circular crack in hollow shaft had greater influence on the first-backward critical speed than the first-forward critical speed. Owing to the influence of crack, the vibration peaks occurred at the 1/2, 1/3 and 1/4 critical speeds of the rotor system, along with a reduction in sub-critical speeds and critical speeds. The deeper crack away from the bearing affected the rotor more significantly. The whirling orbits, the time-domain responses and the spectra were obtained to show the super-harmonic resonance phenomenon in hollow-shaft cracked rotor system.

KW - circular cracks

KW - critical speed

KW - hollow-shaft

KW - Rotor

KW - super-harmonic

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ER -

Dynamical analysis of hollow-shaft dual-rotor system with circular cracks

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