Results 11 to 20 of about 1,347 (227)
Nonlinear Identification of a Squeeze-Film Damper [PDF]
Journal of Tribology, 1988 In this paper the authors describe an experimental study to identify the damping laws associated with a squeeze-film vibration damper. This is achieved by using a nonlinear filtering algorithm to process displacement responses of the damper ring to synchronous excitation and thus to estimate the parameters in an nth-power velocity model.
R. Stanway +2 more
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Cavitation Effects on Squeeze-Film Damper Performance
A S L E Transactions, 1986 Experimental observations on unpressurized dynamically loaded hydrodynamic bearings and squeeze-film dampers indicate that cavitation bubbles, once formed, do not completely redissolve upon the reappearance of positive pressures. Instead, one is left with a spongy compressible fluid.
N. S. Feng, E. J. Hahn
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On Dynamic Characteristics of ER Fluid Squeeze Film Damper
JSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing, 1995 This paper deals with an application of Electrorheological (ER) fluid to a squeeze film damper which enables reduction of whirling amplitude of rotor by adjusting the damping property at each rotating speed. An experimental model composed of a flexible shaft and a controllable ER squeeze film damper was constructed and its performance was studied under
Morishita, Shin, An, Young Kong
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Study on the Vibration Mitigation Characteristic of Dual Clearance Squeeze Film Damper [PDF]
Shock and Vibration, 2021 In this paper, a novel model of dual clearance squeeze film damper (DCSFD) was constructed considering convection effect and the vibration mitigation characteristic of DCSFD was researched. The DCSFD film force linearity rFSFD was proposed.
Zhaojun Feng +7 more
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Theoretical and Experimental Study on the Performance of Hermetic Diaphragm Squeeze Film Dampers for Gas-Lubricated Bearings [PDF]
Chinese Journal of Mechanical EngineeringLow damping characteristics have always been a key sticking points in the development of gas bearings. The application of squeeze film dampers can significantly improve the damping performance of gas lubricated bearings.
Jianwei Wang +5 more
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Some Aspects Regarding the Modeling of Highly Pressurized Squeeze Film Dampers [PDF]
INCAS Bulletin, 2010 Squeeze film dampers (SFD) have been used for many years to control vibration in gasturbines and other high-speed rotating machinery. The overall objective of this paper is to present theanalysis and validation of a dynamic model of a highly pressurized ...
Laurenţiu MORARU
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Lubricants, 2023 Due to the coupling of the damper journal with the elastic ring and oil film, the elastic ring squeeze film damper (ERSFD) shows better dynamic performance in comparison with the traditional squeeze film damper (SFD). Therefore, a novel rigid–elastic–oil
Yan Li, Haisheng Yang, Sier Deng
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Shock and Vibration, 2021 To analyze the problem of vibration and bifurcation in the rotor system of the aeroengine with the elastic ring squeeze film damper (ERSFD) and elastic supports, the theoretical equation of the dynamic rotor system is developed in this paper, based on ...
Guoying Pang +3 more
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A computational fluid dynamics investigation of the segmented integral squeeze film damper
MATEC Web of Conferences, 2019 Rotor vibration attenuation is achieved with damping devices which work on different, often mutually coupled, physical principles. Squeeze film dampers are damping devices that have been widely used in rotordynamic applications.
Ferfecki Petr +4 more
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Journal of Low Frequency Noise, Vibration and Active Control, 2021 In this study, the nonlinear dynamic analysis of the hybrid squeeze film damper mounted on a gear-rotor-bearing system is presented. The strong nonlinear oil film force, nonlinear rub-impact force between the rotor and stator, and the gear meshing force ...
Bo-Lin Jian +3 more
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