CLC number: TH133.31
On-line Access: 2016-08-05
Received: 2015-05-19
Revision Accepted: 2015-10-13
Crosschecked: 2016-07-24
Cited: 3
Clicked: 6056
Citations: Bibtex RefMan EndNote GB/T7714
Liang Ma, Jun-hong Zhang, Jie-wei Lin, Jun Wang, Xin Lu. Dynamic characteristics analysis of a misaligned rotor–bearing system with squeeze film dampers[J]. Journal of Zhejiang University Science A, 2016, 17(8): 614-631.
@article{title="Dynamic characteristics analysis of a misaligned rotor–bearing system with squeeze film dampers",
author="Liang Ma, Jun-hong Zhang, Jie-wei Lin, Jun Wang, Xin Lu",
journal="Journal of Zhejiang University Science A",
volume="17",
number="8",
pages="614-631",
year="2016",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1500111"
}
%0 Journal Article
%T Dynamic characteristics analysis of a misaligned rotor–bearing system with squeeze film dampers
%A Liang Ma
%A Jun-hong Zhang
%A Jie-wei Lin
%A Jun Wang
%A Xin Lu
%J Journal of Zhejiang University SCIENCE A
%V 17
%N 8
%P 614-631
%@ 1673-565X
%D 2016
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1500111
TY - JOUR
T1 - Dynamic characteristics analysis of a misaligned rotor–bearing system with squeeze film dampers
A1 - Liang Ma
A1 - Jun-hong Zhang
A1 - Jie-wei Lin
A1 - Jun Wang
A1 - Xin Lu
J0 - Journal of Zhejiang University Science A
VL - 17
IS - 8
SP - 614
EP - 631
%@ 1673-565X
Y1 - 2016
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1500111
Abstract: In this paper, a dynamic model is established for a two-stage rotor system connected by a gear coupling and supported on ball bearings with squeeze film dampers (SFDs). The nonlinear dynamic behavior of the rotor system is studied under misalignment fault condition. The meshing force of the gear coupling is calculated considering the deformation of the tooth caused by torque transmission and dynamic vibration. The contact force between the ball and race is computed based on the Hertzian elastic contact deformation theory and the elastohydrodynamic lubrication theory. The supported force of SFD is simulated by integrating the pressure distribution derived from Reynolds’s equation. The equations of motion are rewritten in non-dimensional differential form, and the fourth-order Runge–Kutta method is employed to solve the nonlinear dynamic equilibrium equations iteratively. To verify the validity of the dynamic model and the correctness of the numerical solution method, the experimental power spectra of the rotor system under various misalignment degrees are compared with the analytical results. The effects of several important parameters, such as the lubrication of the ball bearing, the centralizing spring stiffness, the radial clearance of SFD, and the misalignment of gear coupling, on the dynamic characteristics of the rotor system are investigated and discussed mainly focusing on the system stability. The response spectra, bifurcation diagrams, and Pointcaré maps are analyzed accordingly. These parametric analyses are very helpful in the development of a high-speed rotor system and provide a theoretical reference for the vibration control and optimal design of rotating machinery.
The authors present a research work on the dynamic response of rotor-bearing system supported on squeeze film damper with misaligned gear coupling fault. It is a topic of interest to researchers in the related areas.
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