Dynamical analysis of hollow-shaft dual-rotor system with circular cracks-Reference-Cited by-同舟云学术

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

Published:2020-09-01 Issue:3 Volume:40 Page:1227-1240
ISSN:1461-3484
Container-title:Journal of Low Frequency Noise, Vibration and Active Control
language:en
Short-container-title:Journal of Low Frequency Noise, Vibration and Active Control

Author:

Yongfeng Yang¹²^ORCID,Jianjun Wang¹,Yanlin Wang¹²,Chao Fu¹,Qingyang Zheng¹,Kuan Lu¹

Affiliation:

1. Institute of Vibration Engineering, Northwestern Polytechnical University, Xi’an, China

2. Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University, Shenyang, China

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.

Funder

NPU Aoxiang New Star

Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern Universit

National Natural Science Foundation of China

Graduate Innovation Fund of Northwestern Polytechnical University

Publisher

SAGE Publications

Subject

Mechanical Engineering,Geophysics,Mechanics of Materials,Acoustics and Ultrasonics,Building and Construction,Civil and Structural Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1177/1461348420948287

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