Results 61 to 70 of about 1,150 (171)

Lubrication Performance Analysis of Misaligned Journal Bearing with Roughness Surface Considering Variable Density and Variable Specific Heat

open access: yesJixie chuandong, 2018
The thermoelastrohydrodynamic lubrication performances of misaligned journal bearing considering surface morphology,thermal effect and variable density and variable specific heat are studied.
Zeng Qi, Zhou Wenping, Shen Kai
doaj  

Flow Characteristics and Experimental Verification of T-Groove Dry Gas Seal Under Different Flow States

open access: yesLubricants
With the improvement of dry gas seal efficiency in high-parameter fields, the flow pattern of gas film lubrication is complicated. Based on gas lubrication theory, the Reynolds equation of compressible gas was established with a bidirectional T-groove ...
Lanxia Zhang   +3 more
doaj   +1 more source

An Approach to Calculate Leakage Flow, Stiffness and Damping of Annular Seals in Turbulent Flow Using Lubrication Theory, Part I: Analysis

open access: yesTribology Online, 2007
This paper presents a general theoretical approach to evaluate the leakage flow, stiffness and damping of annular seals in turbulent flow regime including fluid inertia using turbulent lubrication theory.
Satyam Shivam Gautam, Mihir Kumar Ghosh
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

open access: yesAdvances 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   +5 more
doaj   +1 more source

Analysis of Two-Layered Journal Bearing Lubricated with Ferrofluid

open access: yesMATEC Web of Conferences, 2014
The present study investigates the load capacity and friction coefficient for a two-layered journal bearing lubricated with ferrofluid. A modified Reynolds equation for a two-layered ferrofluid is derived using displaced infinitely long wire magnetic ...
Rao T. V. V. L. N.   +3 more
doaj   +1 more source

CYLINDRICAL ROLLER BEARING LUBRICATION REGIMES ANALYSIS AT LOW SPEED AND PURE RADIAL LOAD

open access: yesActa Polytechnica, 2019
In this article, we describe a method of the roller bearing lubrication regime prediction. It uses a mathematical model of the bearing based on the standard ISO/TS 16281 to obtain the external load distribution over the rolling elements.
Jakub Chmelař   +3 more
doaj   +1 more source

Study on mixed lubrication characteristics of piston/cylinder interface of variable length

open access: yesAIP Advances, 2019
Aiming at the lubrication problem of piston/cylinder interface of variable length, a two-dimensional mixed lubrication model was established. This model considers the adaptive eccentricity and the force balance of the piston.
Shiqing Sun, Na Sun, Xiaoli Wang
doaj   +1 more source

An exact analytical solution for the second order slip-corrected Reynolds lubrication equation [PDF]

open access: yesFME Transactions, 2015
We derive a general slip-corrected compressible Reynolds lubrication equation, valid for any choice of the slip velocities, and show that it possesses the exact analytical solution.
Stevanović Nevena D.   +1 more
doaj  

Analysis on Elastohydrodynamic Lubrication in Grease-lubricated Ball Bearings Considering Film Thickness Correction

open access: yesJixie chuandong
To study the lubrication characteristics of grease-lubricated rolling ball bearings, such as film thickness and pressure variations in elastohydrodynamic lubrication with elliptical point contact, a numerical analysis model of elastohydrodynamic grease ...
Zhang Weiye   +4 more
doaj   +2 more sources

Accuracy and Grid Convergence of the Numerical Solution of the Energy Equation in Fluid Film Lubrication: Application to the 1D Slider

open access: yesLubricants, 2018
The present work is focused on the numerical solution of the complete energy equation used in fluid film lubrication. The work was motivated by the fact that the complete energy equation has no analytical solution that can be used for validations.
Silun Zhang   +2 more
doaj   +1 more source

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