Results 61 to 70 of about 249 (182)
MATEC Web of Conferences, 2018 The theoretical analyses and practical experience show that only the damping effect adaptable to the current operating conditions makes it possible to achieve optimum performance of damping devices inserted in the supports of rotating machines.
Zapoměl Jaroslav +2 more
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Research on Vibration Reduction of a Squeeze Film Damper
IOP Conference Series: Materials Science and Engineering, 2019 Abstract With the trending to high speed, high precision and heavy load of large-scale rotating machinery, the problem of dynamic instability of rotor-bearing systems has become increasingly serious. In this paper, a dynamic model of squeezed-film damper-journal bearing-rotor system was established and the influence of different ...
Jun Liu +4 more
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Influence of assembly conditions on the stressed-stained state of damper support elastic rings
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2017 The article considers the influence of different tolerance values on the stiffness of elastic rings in squeeze film dampers. This type of damper is widely used in gas turbine engine supports.
D. S. Diligensky, D. K. Novikov
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Research on Dynamic Characteristic Coefficients of Integral Squeeze Film Damper
MachinesIntegral squeeze film damper (ISFD) is a new type of structure that appeared on the basis of traditional squeeze film damper (SFD). Since the oil film in ISFD is a segmented structure without annular flow, the nonlinearity of the oil film force has been ...
Wei Yan +5 more
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SQUEEZE FILM DAMPER EFFECT ON VIBRATION OF AN UNBALANCED FLEXIBLE ROTOR USING HARMONIC BALANCE METHOD [PDF]
Journal of Engineering Science and Technology, 2017 In this paper, an effective tool based on harmonic balance method to assess the forced response of these systems under parametric changes is developed.
FENG HE +3 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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An Analytical Turbulence Model for Squeeze Film Damper Short-Bearing Analysis
Applied MechanicsThis paper develops an analytical turbulence model for open-ended squeeze film damper (SFD) application. Prandtl’s mixing length theory is adopted to describe the momentum transfer within the damper for its thin-film turbulent flow.
Tieshu Fan, Kamran Behdinan
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Selecting a squeeze film damper model for solving problems of gas turbine engine rotor dynamics
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2017 Various standard mathematical squeeze film damper (SFD) models that can be applied for solving rotor dynamics problems of gas turbine engines (GTE) are presently available.
M. K. Leontiev, M. N. Kutakov
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Journal of Applied Fluid Mechanics, 2021 To study the periodically time-varying dynamic characteristics of static eccentric squeeze film damper (SFD), two models of computational fluid dynamics were established by dynamic mesh method of transient flow field.
Z. Hai-lun, C. Xi, Z. Ming
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Alexandria Engineering Journal, 2016 One of the main challenges in the design of rotating machinery is the occurrence of undesirable vibration. In this paper, stability and bifurcation of the unbalance response of a rigid rotor supported by squeeze film damper with asymmetry in centralizing
Hamidreza Heidari, Mohammadreza Ashkooh
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