ARTICLE
Dynamic Characteristics of Rotor-SFD System with Inertial Effect of SFD
Zhongyu Yang 1,2,3
,
 
,
 
Jiali Chen 1,2,3
,
 
Yinli Feng 1,3,5
 
 
 
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1
Key Laboratory of Light Duty Gas Turbine, Institute of Engineering Thermophysics, Chinese Academy of Sciences
 
2
School of Aeronautics and Astronautics, University of Chinese Academy of Sciences
 
3
National Key Laboratory of Science and Technology on Advanced Light-duty Gas-turbine, Beijing, China
 
4
Beijing Aerospace Propulsion Institute, Beijing, China
 
5
School of Engineering Sciences, University of Chinese Academy of Sciences
 
 
Submission date: 2024-01-10
 
 
Final revision date: 2024-03-30
 
 
Acceptance date: 2024-09-14
 
 
Online publication date: 2024-10-30
 
 
Corresponding author
Yinli Feng   

National Key Laboratory of Science and Technology on Advanced Light-duty Gas-turbine, Institute of Engineering Thermophysics, Chinese Academy of Sciences, China
 
 
Journal of Theoretical and Applied Mechanics 2024;62(4):737-749
 
KEYWORDS
TOPICS
ABSTRACT
Squeeze film dampers (SFDs) are damping devices that have been widely used in rotating machines. SFDs can effectively suppress rotor vibration and reduce transmitted forces. This study established a dynamic characteristic model of the SFD considering inertia force and developed the finite element model of the rotor-SFD system by combining fluid mechanics and rotor dynamics. Furthermore, the influence of SFD structural parameters on cavitation, pressure distribution, stiffness, and damping coefficient of the SFD was investigated. The impact of the SFD clearance on the transient dynamic characteristics of the rotor-SFD system was also analyzed.
 
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