Abstract
Outer ring of bearing fit looseness fault is a common fault. Scratch often appears in the inner surface of pedestal. The fit looseness fault mechanism is not clear. For rotor-rolling bearing system with fit looseness fault between rotor-bearing outer ring and pedestal, a rotor coupling dynamic model that the interaction of bearing outer ring and pedestal are considered. This model is different from the universal rubbing model, where the directions of relative motion between rotor and stator are not considered. Numerical integration method is used to obtain the response of the system where the rotor is established by FEM and the bearing outer ring and pedestal are established by lumped mass model. Firstly, modal test results and simulation results were used to verify the correctness of this model. Secondly, the role of tightening torque between bearing outer ring and pedestal is considered, and the response characteristics of bearing and rotor are analyzed when fit looseness fault is considered. Finally, comparing the simulation results with test results, the waveform and spectrum are similar, which verifies the correctness of the fit looseness model. The fit looseness fault characteristics are that the acceleration after noise reduction shows periodic impact, up and down asymmetry, multiple frequencies appear. A method by increasing tightening torque is put forward to control the vibration caused by fit looseness fault.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
G. Chen, Nonlinear dynamics of unbalance-looseness coupling faults of rotor-ball bearing-stator coupling system, Journal of Mechanical Engineering, 44 (3) (2008) 82–88 (in Chinese).
Y. G. Luo et al., Nonlinear characteristics of two-span rotorbearing system with coupling faults of pedestal looseness and rub-impact, Transactions of the Chinese Society for Agricultural Machinery, 39 (11) (2008) 180–183 (in Chinese).
H. Ma et al., Dynamic characteristic analysis of a rotor system with pedestal looseness coupled rub-impact fault, Journal of Mechanical Engineering, 48 (19) (2012) 80–86 (in Chinese).
H. Ma et al., Analysis of dynamic characteristics for a rotor system with pedestal looseness, Shock and Vibration, 18 (1) (2011) 13–27.
A. Muszynska and P. Goldman, Chaotic responses of unbalanced rotor bearing stator systems with looseness or rubs, Chaos, Solitons and Fractals, 5 (9) (1995) 1683–1704.
F. F. Ehrich, A new class of asynchronous rotordynamic response in high-speed rotors, Proc. of the ASME 2007 Design Engineering Technical Conferences & Computers and Information in Engineering Conference, Las Vegas, Nevada, USA (2007).
Y. Liu et al., Looseness-rubbing coupling fault of dual-disk three-supporting rotor-bearing system, Journal of Aerospace Power, 28 (5) (2013) 977–982 (in Chinese).
W. Lu and F. Chu, Experimental investigation of pedestal looseness in a rotor-bearing system, Key Engineering Materials (2009) 413–414, 599–605.
H. F. Wang and G. Chen, Certain type turbofan engine whole vibration model with support looseness fault and casing response characteristics, Shock and Vibration (2014) 1–23.
H. F. Wang, G. Chen and P. P. Song, Asynchronous vibration response characteristics of connectors with looseness fault and its verification, Journal of Vibroengineering, 17 (7) (2015) 3551–3560.
H. F. Wang, G. Chen and P. P. Song, Asynchronous vibration response characteristics of aero-engine with support looseness fault, Journal of Computational and Nonlinear Dynamics (2016) 11:031013-1-031013-10.
H. F. Wang et al., Modeling for whole missile turbofan engine vibration with support looseness fault and characteristics of casing response, Journal of Aerospace Power, 30 (3) (2015) 627–638 (in Chinese).
S. J. Wang et al., Nonlinear vibration of rotor systems caused by assembly process of a bearing outer ring of an aero-engine, Journal of Aerospace Power, 30 (1) (2015) 82–89 (in Chinese).
G. Chen, A coupling dynamic model for whole aero-engine vibration and its verification, Journal of Aerospace Power, 27 (2) (2012) 242–254 (in Chinese).
G. Chen, Vibration modeling and verifications for whole aero-engine, Journal of Sound and Vibration, 349 (4) (2015) 163–176.
Author information
Authors and Affiliations
Corresponding author
Additional information
Recommended by Associate Editor Kyoung-Su Park
Wang Haifei is a lecturer of College of Mechanical Engineering, Yangzhou University, Yangzhou, P. R. China. He is currently mainly engaged in the study of whole aero-engine vibration, rotating machine fault diagnosis, aerodynamics, acoustics, UAV noise prediction.
Guan Xiaoying received a master degree in the School of Software from the Sun Yat-sen University, Guangzhou, P. R. China, in 2008. Now she is a student in the College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing, P. R. China. Her current research interests include genetic algorithm, pattern recognition and machine learning, and their application in bearing fault diagnosis.
Chen Guo is a Professor at the College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing, P. R. China. He is currently mainly engaged in the study of whole aero-engine vibration, rotor-bearing dynamics, rotating machine fault diagnosis, pattern recognition and machine learning, and signal analysis and processing.
Gong Junjie is a Professor of College of Mechanical Engineering, Yangzhou University, Yangzhou, P. R. China. He is currently mainly engaged in the study of the dynamic and static test and optimization of the mechanical structure, and computer modeling and simulation of engineering problems.
Yu Liang is a lecturer of College of Mechanical Engineering, Yangzhou University, Yangzhou, P. R. China. He is currently engaged in the fields of tribology of surface engineering, mechanical dynamics, and numerical simulation.
Yuan Shijie is a mechanical engineer of College of Mechanical Engineering, Yangzhou University, Yangzhou, P. R. China. He is currently mainly engaged in the study of mechanical design and metal processing technology.
Zhu Zhida is a senior engineer of College of Mechanical Engineering, Yangzhou University, Yangzhou, P. R. China. He is currently mainly engaged in the study of magnetic motor design and mechanical working.
Rights and permissions
About this article
Cite this article
Wang, H., Guan, X., Chen, G. et al. Characteristics analysis of rotor-rolling bearing coupled system with fit looseness fault and its verification. J Mech Sci Technol 33, 29–40 (2019). https://doi.org/10.1007/s12206-018-1204-7
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12206-018-1204-7