Nonlinear dynamic behaviors of ball bearing rotor system
WANG Li-qin1, CUI Li1,2, ZHENG De-zhi1, GU Le1
Author NameAffiliation
WANG Li-qin School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China, mechcui@163.com
CUI Li School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China, mechcui@163.com
School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
ZHENG De-zhi School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China, mechcui@163.com
GU Le School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China, mechcui@163.com
Abstract:
Nonlinear forces and moments caused by ball bearing were calculated based on relationship of displacement and deflection and quasi-dynamic model of bearing. Five-DOF dynamic equations of rotor supported by ball bearings were estimated. The Newmark-β method and Newton-Laphson method were used to solve the equations. The dynamic characteristics of rotor system were studied through the time response, the phase portrait, the Poincar?maps and the bifurcation diagrams. The results show that the system goes through the quasi-periodic bifurcation route to chaos as rotate speed increases and there are several quasi-periodic regions and chaos regions. The amplitude decreases and the dynamic behaviors change as the axial load of ball bearing increases; the initial contact angle of ball bearing affects dynamic behaviors of the system obviously. The system can avoid non-periodic vibration by choosing structural parameters and operating parameters reasonably.
Key words: ball bearing rotor system nonlinear bearing force dynamic behaviors
DOI：10.11916/j.issn.1005-9113.2009.02.028
Clc Number:TH133.33
Fund:
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Nonlinear dynamic behaviors of ball bearing rotor system
本站小编 哈尔滨工业大学/2019-10-23
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