Results 251 to 260 of about 3,606 (307)

Hydrodynamic Lubrication in a Nanoscale Bearing

Advanced Materials Research, 2009
Nonequilibrium molecular dynamics simulation is used to simulate the hydrodynamics lubrication in the nanoscale bearing. A physical model of the nanascale bearing that the thin liquid water film confined between two solid walls has been set up. The simulation results indicate that the hydrodynamic pressure profiles as the macroscopic state are formed ...
Chang Zheng Xiang, Yu Juan Wang, Yun Fei Chen   +2 more
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A Note on the Hydrodynamic Pocket Bearing

Journal of Applied Mechanics, 1960
Using relaxation methods, accurate solutions are presented for the hydrodynamic pocket bearing. These are compared with an approximate solution. It is found that the latter gives quite accurate results with a considerable decrease in time and effort.
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The Hydrodynamic Pocket Bearing

Journal of Fluids Engineering, 1955
Abstract The low power loss of an externally pressurized pocket bearing is accompanied by dependence upon the reliability of the external pressure source. In this new hydrodynamic pocket-bearing design the required flows and pressures are generated by hydrodynamic action within the bearing.
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On the hydrodynamic lubrication of roller-bearings

Wear, 1959
Abstract An analysis is made of the lubrication of cylindrical roller-bearings in the hydrodynamic regime. Expressions are derived for the maximum film pressure, load capacity of the bearing, frictional moment on the shaft, and coefficient of friction. A numerical example is worked out and the limits of the theory investigated.
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A Simple Hydrodynamic Thrust Bearing

Journal of Fluids Engineering, 1950
Abstract Considerable mathematical difficulty has handicapped the designer in the application of the hydrodynamic theory of lubrication. This difficulty arises essentially from the shapes assumed by the oil films. In 1918 Lord Rayleigh gave a detailed analysis of the simple slider bearing, neglecting the side-leakage effect, in which he ...
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The Hydrosphere—A New Hydrodynamic Bearing

Journal of Applied Mechanics, 1948
Abstract A fitted spherical bearing has been found to operate hydrodynamically when subjected to large values of thrust or radial-thrust load. An examination of the geometry of this bearing fails to reveal the usual wedge-shaped oil film in the direction of motion of the moving bearing surface.
M. C. Shaw, C. D. Strang
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The Hydrodynamic Pocket Thrust-Bearing

Proceedings of the Institution of Mechanical Engineers, 1956
Wilcock (1955)† describes a thrust bearing in which the power loss is very much less than that of the existing conventional thrust bearings. This bearing consists of a stepped oil film with side lands to restrict side leakage, and a pocket of large depth over which the friction is negligible. The analysis described, although allowing for side leakage,
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Hydrodynamic Bearings

2014
Dominique Bonneau, Aurelian Fatu, Dominique Souchet   +2 more
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Composite-film hydrodynamic bearings

International Journal of Engineering Science, 2010
Abstract From time-to-time, experts endeavor to estimate the amount of energy lost due to friction and wear. According to one such estimate, over 4.22 × 1018 J of energy were lost in the United States in 1978 alone – enough to supply New York city for the entire year. A major factor in limiting our energy efficiency is energy loss through friction in
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Thermo‐Hydrodynamic Lubrication in Hydrodynamic Bearings

2014
Dominique Bonneau, Aurelian Fatu, Dominique Souchet   +2 more
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