Identification Method of Rotordynamic Coefficients of Sliding Bearing Based on Nonlinear Oil Film Force

被引：0
|
作者：
Wang Y.-L. [1 ]
Wang P.-X. [2 ]
Liu Z.-H. [1 ]
Zhong J.-J. [1 ]
机构：
[1] Marine Engineering College, Dalian Maritime University, Dalian
[2] School of Materials Science and Engineering, Dalian University of Technology, Dalian
来源：
| 1600年 / Journal of Propulsion Technology卷 / 38期
关键词：
Identification method; Oil film force; Rotordynamic coefficients; Sliding bearing;
D O I：
10.13675/j.cnki.tjjs.2017.03.023
中图分类号：
学科分类号：
摘要：
In order to recognise the rotordynamic coefficient directly from the nonlinear oil film forces of sliding bearing more efficiently, the relationships between the journal disturbance and nonlinear oil film forces are established in frequency domain, and eight stiffness and damping coefficients are identified respectively by using the technique of only one journal disturbance with the same perturbation amplitude but different frequency. The accuracy of the identification method is demonstrated by a plain journal bearing case, while the influences of accuracy with disturbance amplitude and frequency are analyzed. The results show that disturbance amplitude has great influence on the accuracy but the disturbance frequency does not. When the disturbance amplitude is larger than 0.016 times or less than 0.005 times the radius clearance, the recognition accuracy is more than 5% or less than 0.5%, respectively. Specially the accuracy of recognition can be up to 0.045% when the disturbance amplitude is 0.001 times the radial clearance. © 2017, Editorial Department of Journal of Propulsion Technology. All right reserved.
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页码：659 / 665
页数：6
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