Results 151 to 160 of about 3,143,831 (179)

Modeling and Experimental Investigation of Micro-Hydrostatic Gas Thrust Bearings for Micro-Turbomachines

Volume 4: Turbo Expo 2005, 2005
One of the major challenges for the successful operation of high-power-density micro-devices lies in the stable operation of the bearings supporting the high-speed rotating turbomachinery. Previous modeling efforts by Piekos [1], Liu et al. [2] and Spakovszky and Liu [3] have mainly focused on the operation and stability of journal bearings.
C. J. Teo, Z. S. Spakovszky
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Amplitude Effects on the Dynamic Performance of Hydrostatic Gas Thrust Bearings

Journal of Lubrication Technology, 1979
A strip gas film bearing with inherently compensated inlets is analyzed to determine the effect of disturbance amplitude on its dynamic performance. The governing Reynolds’ equation is solved using finite-difference techniques. The time dependent load capacity is represented by a Fourier series up to and including the third harmonics.
A. Kent Stiffler, R. R. Tapia
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Static and dynamic performance analysis of radial hydrostatic gas bearings

AIP Conference Proceedings, 2019
Hydrostatic gas bearings have been widely used in industrial applications, however, the dispersion of the extremely thin gas film has always plagued engineers who want to use the computational fluid dynamics method to predict the performance of them. This paper combined the relevant modules of commercial software COMOSL Multiphysics, which avoids the ...
Changpei Zhuang, Xiaojun Wang, Chunjie Yan   +2 more
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Static Properties of Hydrostatic Thrust Gas Bearings With Curved Surfaces

Journal of Lubrication Technology, 1972
The classical treatment of circular, hydrostatic, orifice-regulated thrust gas bearings, in which perfectly plane bearing plates are assumed, is extended to include axisymmetric, but otherwise arbitrary, plate profiles. Plate curvature has a strong influence on bearing load capability, static stiffness, tilting stiffness, and side force per unit ...
F. H. Rehsteiner, R. H. Cannon
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Hydrostatic slider gas bearings fed through a row of porous discs

International Journal of Machine Tool Design and Research, 1971
Abstract This paper analyses some advantagesof externally pressurized gas bearings onto which gas is supplied through a row of porous discs, the surfaces of which are ground together with the bearing pad surface. Formulae and curves are given for calculating the main static and dynamic characteristics and for stability analysis.
R. Gomez, M. Szwarcman
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Dynamic Characteristics of a Hydrostatic Gas Bearing Driven by Oscillating Exhaust Pressure

Journal of Tribology, 1984
Vibration of a statically loaded, inherently compensated hydrostatic journal bearing due to oscillating exhaust pressure is investigated. Both angular and radial vibration modes are analyzed. The time-dependent Reynolds equation governing the pressure distribution between the oscillating journal and sleeve is solved together with the journal equation ...
C. B. Watkins, H. D. Branch, I. E. Eronini   +2 more
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Stability of a New Type of Hydrostatic/Hydrodynamic Floating Ring Gas Bearing

Tribology Transactions, 1999
In this paper, a new type of floating ring gas bearing in which a “floating ring” is combined with an “orifice-annular and shallow-pocket” gas bearing is introduced. The stability of this new type of floating ring gas journal bearing is theoretically analyzed by use of the modified 8-stiffness and damping coefficients method.
Rui-Qian Zhang, H. S. Chang
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Tilting effects on the performance of hydrostatic and hybrid gas thrust bearings

Tribology International, 1981
Abstract A hydrostatic gas thrust bearing is analysed to determine the effect of tilting on its performance characteristics. The governing Reynolds Equation is solved simultaneously with the mass flow rate equation by numerical methods to determine the inlet pressure and the pressure distribution throughout the pad.
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Optimum clearance of a gas hydrostatic thrust bearing with maximum load capacity

Fluid Dynamics, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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The Influence Mechanism of the Gas Fraction in Lubricant on Hydrostatic Bearing Characteristics at Different Shear Rates

Journal of Tribology
Abstract The purpose of this article is to explore the mechanism and law of the gas fraction in lubricants affecting hydrostatic bearings at different shear rates. Based on the coupling between the Reynolds and Rayleigh–Pleset equations, the two-phase flow shear viscosity model, and the finite volume method, a mathematical model of ...
Yangfeng Ou, Huimin Kang, Yue Zhou, Houcai Liu, Zheng Cao, Zhihai Ouyang, Wang Li, Lianghui Duan   +7 more
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