Dynamic Analysis of Rotor-Ball Bearing System of Air Conditioning Motor of Electric Vehicle
International Journal of Mechanical Engineering and Applications
Volume 3, Issue 3-1, June 2015, Pages: 22-28
Received: Feb. 8, 2015;
Accepted: Feb. 8, 2015;
Published: Feb. 14, 2015
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Van-Trang Nguyen, Faculty of Vehicle and Energy Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh city, Vietnam
Pyung Hwang, School of Mechanical Engineering, Yeungnam University, North Gyeongsang, Korea
Nowadays, electric vehicles (EV) present a promising solution to reduce greenhouse gas emissions. They are considered zero emission vehicles. Rotor bearing system is important part of air conditioning motor of EV. The aim of this research is to develop a numerical model to investigate the structural dynamic response of the rigid rotor supported on deep groove ball bearings. The numerical model considers rotor imbalance that varies with speed, as well as sources of nonlinearity such as Hertzian contact force, ball clearance and varying compliance vibration. This is very important on the design point of view. The 4th order Runge-Kutta numerical integration technique has been applied. The results are presented in form of time displacement response, frequency spectra, and Poincarè map. The analysis demonstrates that the number of balls is one of the key factors affecting on the dynamic characteristics of rotor bearing system. The model can also be used as a tool for predicting nonlinear dynamic behavior of rotor system of air conditioning motor of electric vehicle under different operating conditions. Moreover, the study may contribute to a further understanding of the nonlinear dynamics of rotor bearing system.
Dynamic Analysis of Rotor-Ball Bearing System of Air Conditioning Motor of Electric Vehicle, International Journal of Mechanical Engineering and Applications. Special Issue: Transportation Engineering Technology — Part Ⅱ.
Vol. 3, No. 3-1,
2015, pp. 22-28.
F. Ehrich, Observations of nonlinear phenomena in rotordynamics, Journal of system design and dynamics 2 (3), 641–651, 2008.
Mei Cheng, Guang Meng and Bingyu Wu, Nonlinear dynamics of a rotor-ball bearing system with Alford force, Journal of Vibration and Control 18(1), 17–27, 2011.
Dong-Soo Lee, Dong-Hoon Choi, A dynamic analysis of a flexible rotor in ball bearing with nonlinear stiffness characteristics, International Journal of Rotating Machinery, 3(2), 73-80, 1997.
El-Saeidy, F.M.A., Finite element modeling of rotor-shaft-rolling bearing system with consideration of bearing nonlinearities, Journal of Vibration and Control 4, 514-602, 1998.
Tiwari, M., Gupta, K., Prakash, O., Experimental study of a rotor supported by deep groove ball bearing. International Journal of Rotating Machinery. 8(4), 243-258, 2002.
Tiwari, M., Gupta, K., Prakash, O., Effect of radial internal clearance of a ball bearing on the dynamics of a balanced horizontal rotor, Journal of Sound and Vibration, 238(5, 723-756), 2000.
Wardle FP, Poon Y., Rolling bearing noise, cause and curve, Chartered Mechanical Engineering, 36-40, 1983.
Wardle FP., Vibration forces produced by waviness of the rolling surfaces of thrust loaded ball bearings. Part I: Theory Proceeding of the IMechE; 202(C5):305-12, 1988.
R. Zeillinger and H. Köttritsch, Damping in a rolling bearing arrangement, Evolution, 1/96, 1996.
P. Lewis and S. B. Malanoski, Rotor-Bearing Dynamics Design Technology, Part IV: Ball Bearing Design Data. AFAPL-TR-65-45, 1965.
Krämer, E., Dynamics of Rotor and Foundations, Springer-Verlag, New York, 1993.
T.C. Gupta, K.Gupta, D.K. Sehgal, Nonlinear Dynamics and Chaos of an Unbalanced Flexible Rotor Supported by Deep Groove Ball Bearings with Radial Internal Clearance. IUTAM Symposium on Emerging Trends in Rotor Dynamics, 2011.
T.A. Harris, Rolling Bearing Analysis, 4th Edition, John Wiley & Sons, Inc., New York, 2001.
Francis C. Moon, Chaotic and Fractal Dynamics An Introduction for Applied Sciences and Engineers, John Wiley & Sons, Inc., 1992.
Wenbing Tu, Yimin Shao, and Chris K. Mechefske, An analytical model to investigate skidding in rolling element bearings during acceleration, Journal of Mechanical Science and Technology, 26(8), 2451-2458, 2012.
Pyung Hwang, Van Trang Nguyen, A Study on Dynamic Analysis of Rotor-Bearing System with the Effect of Number of Balls, Proceedings of KSTLE 56th - 2013 Spring Conference, Seoul, Korea, 2013.