Dynamic Parameters Equivalent Modeling of Bearings Joint Surfaces Based on the Virtual Material

Abstract:

As commonly supporting parts of the spindle and the feed systems on the high-end grade CNC machine tool, dynamic characteristic of angular contact ball bearings had been a research hot spot in the current. Aiming at solving the problem that obtained the dynamic stiffness and damping of angular contact ball bearings, the factors of joint surfaces dynamic characteristic were equivalently viewed as a kind of virtual material in the paper, and an equivalent model of dynamic parameters for bearings joint surfaces was proposed based on the virtual material; an experimental device was developed to test the bearings dynamic parameters. The comparison of experimental results and simulation results showed that modal parameters of bearings could be accurately analyzed by the proposed modeling approach, and the relative errors of corresponding vibration frequencies in the radial and the axial directions could be controlled within 7%.

• Periodical: Applied Mechanics and Materials (Volumes 433-435)
• Pages: 35-39
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.433-435.35
• Online since: October 2013
• Authors: Lian Bao Wang*, Xiao Qiu Hu, Wei Fu Chen
• Keywords: Bearings, Dynamic Parameter, Equivalent Virtual Material, Joint Surface

References

[1] LIU Qiang, LI Dong-ru. Current situation and prospect of key technologies of domestic NC machine tool[J]. Aeronautical Manufacturing Technology, 2010, (10): 26-30.

[2] E. Abele, Y. Altintas, C. Brecher. Machine tool spindle units[J]. CIRP Annals-Manufacturing Technology, 2010, 59(2): 781-802.

DOI: 10.1016/j.cirp.2010.05.002

[3] GAO Hong-bin. Research on Structure and Modality of Roller Bearing Based on FEA[J]. Mechanical Engineering & Automation, 2007, (4): 90-92, 95.

[4] TONG Bao-hong, LIU Ying, SU Hong. Some Issues in Numerical Simulation of Dynamic Contacting Nature of Roller Bearing[J]. Chinese Journal of Mechanical Engineering, 2012, 48(21): 116-123.

DOI: 10.3901/jme.2012.21.116

[5] S.H. Upadhyay, S.C. Jain, S.P. Harsha. Vibration analysis of high speed rolling element bearings due to race defects[C]. IUTAM symposium on emerging trends in rotor dynamics. New Delhi: Indian Institute of Technology, 2009: 349-359.

DOI: 10.1007/978-94-007-0020-8_30

[6] FANG Bing, ZHANG Lei, ZHAO Ji. Dynamic parameter identification and modeling for bearing joint interfaces[J]. Journal of Xi'an Jiaotong University, 2012, 46(11): y1-y6.

[7] Beijing Institute of Mechanics, Chinese Academy of Sciences; Solid Mechanics Research. Bending Stability and Vibration of Sandwich Shell [M]. Beijing: Science Press, (1977).

[8] NI Qiao, LI Guo-qing, Qian Qin. Mechanics of Materials[M]. Wuhan: Huazhong University of Science and Technology, (2006).