Results 21 to 30 of about 24,285 (271)

Experimental study on the lubrication characteristics of porous journal bearings with hydrodynamic shape forming at annular surface under sine-wave vibrated conditions (Examination into the shaft rotating behavior at the starting state by identifying the rotational modes with Frequency Spectrum Analysis of the time history waveform on shaft)

Nihon Kikai Gakkai ronbunshu, 2019
This report describes the study on the lubrication characteristics of porous journal bearings, which were made with oil impregnated sintered materials having some hydrodynamic shapes, to apply them for a DC Spindle Motor’s bearing system. Herring Bone (I
Shigeru OHTSUKA, Masaki YAKABE, Yasutaka HAYAMIZU, Koichi OTSUKA   +3 more
doaj   +1 more source

Individual Drive of Internal Combustion Engine Lubrication System Based on Switched Reluctance Motor

Energy Engineering and Control Systems, 2020
The article analyses the modern lubrication systems for internal combustion engines. Systems with mechanical drive components that contain mechanical and electronic components have been found to have a number of disadvantages.
Ihor Holovach, Lidiya Kasha, Ivan Hudzii
doaj   +1 more source

Effect of load and speed on warship power rear drive system helical gear anti-scuffing properties in thermal elasto-hydrodynamic lubrication

Advances in Mechanical Engineering, 2016
The key parameters which caused the scoring failure of helical gears are operating load and speed. In this study, the simulations using geometric meshing theory were carried out to investigate the effect of load and speed of warship transmission helical ...
Yongmei Wang, Junpeng Shao, Xigui Wang, Xuezeng Zhao, Shubao Li, Lixin Cao   +5 more
doaj   +1 more source

Analysis for Hydrodynamic Wedge-Platform Thrust Slider Bearing with Ultralow Surface Separation

International Journal of Rotating Machinery, 2022
For the case of ultralow surface separation, in a hydrodynamic wedge-platform thrust slider bearing, the outlet zone and a portion of the inlet zone are in boundary lubrication, while most of the inlet zone is in the multiscale lubrication contributed by
Chao Wang, Yongbin Zhang
doaj   +1 more source

Dynamic simulation of hydrodynamically interacting suspensions [PDF]

, 1988
A general method for computing the hydrodynamic interactions among an infinite suspension of particles, under the condition of vanishingly small particle Reynolds number, is presented.
Bossis, Georges, Brady, John F., Lester, Julia C., Phillips, Ronald J.   +3 more
core   +1 more source

A model for deformable roll coating with negative gaps and incompressible compliant layers [PDF]

, 2003
A soft elastohydrodynamic lubrication model is formulated for deformable roll coating involving two contra-rotating rolls, one rigid and the other covered with a compliant layer. Included is a finite-strip model (FSM) for the deformation of the layer and
Gaskell, P.H., Gostling, M.J., Savage, M.D., Young, A.E.   +3 more
core   +1 more source

Investigation of Geometric Characteristics on the Lubricant Performance of Thrust Bearing with Cavitation [PDF]

Journal of Applied Fluid Mechanics
In this study, a mixed lubrication model that incorporates cavitation can be developed to examine the evolution of hydrodynamic lubrication in spiral grooved thrust bearing.
L. Kailei, C. Jiayuan, Z. Haoran, Z. Lin, W. Xuze, C. Yu   +5 more
doaj   +1 more source

Influence of Lubrication Cycle Parameters on Hydrodynamic Linear Guides through Simultaneous Monitoring of Oil Film Pressure and Floating Heights

Lubricants
Hydrodynamic linear guides in machine tools offer a high load capacity and excellent damping characteristics, improving stability, precision, and vibration reduction.
Burhan Ibrar, Volker Wittstock, Joachim Regel, Martin Dix   +3 more
doaj   +1 more source

The effect of textured surfaces on the hydrodynamic pressure generation in journal bearings

MATEC Web of Conferences, 2018
Surface texturing of the lubricated bearing has proven to improve the hydrodynamic performance. The present paper analyzed the effect of surface texturing on the covergent journal bearing with computational fluid dynamic (CFD) approach.
Muchammad, Tauviqirrahman Mohammad, Akbar Rizqy Amanullah, Hilmy Fuad, Jamari   +4 more
doaj   +1 more source

Molecular dynamics simulation of the Stribeck curve: Boundary lubrication, mixed lubrication, and hydrodynamic lubrication on the atomistic level

Friction, 2023
Lubricated contact processes are studied using classical molecular dynamics simulations for determining the entire range of the Stribeck curve. Therefore, the lateral movement of two solid bodies at different gap height are studied. In each simulation, a
Simon Stephan, Sebastian Schmitt, Hans Hasse, Herbert M. Urbassek   +3 more
doaj   +1 more source