Ball-bearing rotor systems are key components of rotating machinery. In this work, a new dynamic modeling method for ball-bearing rotor systems is proposed based on rigid body element (RBE). First, the concept of RBE is given, and then the rotor is divided into several discrete RBEs. Every two adjacent RBEs are connected by imaginary springs, whose stiffness is calculated according to properties of the RBEs. Second, all the parts of rolling ball bearings (i.e., outer ring, inner ring, ball, and cage) are considered as RBEs, and Gupta's model is employed to model bearings which include radial clearance, waviness, pedestal effect, etc. Finally, the rotor and all the rolling ball bearings are coupled to develop a dynamic model of the ball-bearing rotor system. The vibration responses of the ball-bearing rotor system can be calculated by solving dynamic equations of each RBE. The proposed method is verified with both simulation and experiment. The RBE model of the rotor is compared with its finite element (FE) model first, and numerical simulation shows the validity of the RBE model. Then, experiments are conducted on a rotor test rig which is supported with two rolling ball bearings as well. Good agreements between measurement and simulation show the ability of the model to predict the dynamic behavior of ball-bearing rotor systems.
Skip Nav Destination
Article navigation
July 2016
Research-Article
A New Dynamic Model of Ball-Bearing Rotor Systems Based on Rigid Body Element
Hongrui Cao,
Hongrui Cao
State Key Laboratory for Manufacturing Systems
Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: chr@mail.xjtu.edu.cn
Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: chr@mail.xjtu.edu.cn
Search for other works by this author on:
Yamin Li,
Yamin Li
State Key Laboratory for Manufacturing Systems
Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Search for other works by this author on:
Xuefeng Chen
Xuefeng Chen
State Key Laboratory for Manufacturing Systems
Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Search for other works by this author on:
Hongrui Cao
State Key Laboratory for Manufacturing Systems
Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: chr@mail.xjtu.edu.cn
Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: chr@mail.xjtu.edu.cn
Yamin Li
State Key Laboratory for Manufacturing Systems
Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Xuefeng Chen
State Key Laboratory for Manufacturing Systems
Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
1Corresponding author.
Manuscript received July 22, 2015; final manuscript received December 29, 2015; published online March 8, 2016. Assoc. Editor: Tony Schmitz.
J. Manuf. Sci. Eng. Jul 2016, 138(7): 071007 (10 pages)
Published Online: March 8, 2016
Article history
Received:
July 22, 2015
Revised:
December 29, 2015
Citation
Cao, H., Li, Y., and Chen, X. (March 8, 2016). "A New Dynamic Model of Ball-Bearing Rotor Systems Based on Rigid Body Element." ASME. J. Manuf. Sci. Eng. July 2016; 138(7): 071007. https://doi.org/10.1115/1.4032582
Download citation file:
Get Email Alerts
Related Articles
Vibration Modeling of a Rigid Rotor Supported on the Lubricated Angular Contact Ball Bearings Considering Six Degrees of Freedom and Waviness on Balls and Races
J. Vib. Acoust (February,2012)
Vibration Monitoring and Damage Quantification of Faulty Ball Bearings
J. Tribol (October,2005)
Instability and Chaos of a Flexible Rotor Ball Bearing System: An Investigation on the Influence of Rotating Imbalance and Bearing Clearance
J. Eng. Gas Turbines Power (August,2011)
Synchronous Response to Rotor Imbalance Using a Damped Gas Bearing
J. Eng. Gas Turbines Power (March,2010)
Related Proceedings Papers
Related Chapters
NASA Five-Ball Fatigue Tester—Over 20 Years of Research
Rolling Contact Fatigue Testing of Bearing Steels
Precessional Slip and Microinclusion Effect on Fatigue Life of Bearing Rolling Element: An Integrated Life Estimation Model through Experimental and Analytical Investigation
Bearing and Transmission Steels Technology
Microstructural Alterations in Rolling Contact Fatigue
Advances in Electron Metallography: Vol. 6