Results 81 to 90 of about 146 (125)
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TEHL simulation on the influence of lubricants on load-dependent gear losses
Tribology International, 2017Abstract A transient TEHL simulation model based on a finite element formulation and implemented in multiphysics software is applied to study the TEHL contact along the path of contact of spur gears with a focus on load-dependent gear loss of different lubricants. Lubricant properties including the limiting shear stress are based on measurement data.
Karsten Stahl, Thomas Lohner
exaly +2 more sources
Formation of Steady Dimples in Point TEHL Contacts
Journal of Tribology, 2000Experimental results of steady dimples measured in elliptical glass-steel contact under pure sliding conditions are presented. It is found that two dimples connected with a shallower furrow are generated, each near an end of the major radius of the contact ellipse. The complete solution of the corresponding thermal elastohydrodynamic lubrication (TEHL)
P. Yang, S. Qu, M. Kaneta, H. Nishikawa
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Characterization of TEHL contacts of thermoplastic gears
Forschung im Ingenieurwesen, 2017Thermoplastic materials generally show low specific weight, low coefficients of friction, noise damping behavior and demonstrate low-cost manufacturing by injection molding. This qualifies thermoplastics for the use in lightweight gear design and more generally for an increase in resource efficiency.
Enzo Maier +3 more
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Approximation Solution for TEHL of Bevel Gears in PSD
Journal of Applied Mathematics and Physics, 2013 To study the lubrication of the contact zone between half-shaft gears and planet gears in the power-split device (PSD), TEHL line contact of bevel gears in PSD is approximately computed based on a theory in which a bevel gear is equalized to an equivalent spur gear.
Yunhui Zhang +4 more
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Effects of Oblique Roughness on TEHL Point Contacts
Part A: Tribomaterials; Lubricants and Additives; Elastohydrodynamic Lubrication; Hydrodynamic Lubrication and Fluid Film Bearings; Rolling Element Bearings; Engine Tribology; Machine Components Tribology; Contact Mechanics, 2006The effects of surface roughness with different orientations on thermal elastohydrodynamic lubrication (TEHL) are studied based on Eyring fluid flow model under simple sliding point contacts. The effects of the amplitude and wavelength of longitudinal roughness on TEHL point contacts are also discussed under rolling and/or sliding conditions.Copyright ©
J. Wang, T. Inumaru, M. Kaneta
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Thermo-mechanical response of TEHL contacts under dynamic loading conditions
Tribology InternationalA CFD-FSI approach is employed to investigate the thermo-mechanical response of TEHL contacts to time- varying loading conditions. The response to an impact load, with increment Delta f over time Delta t, and taking into account the equivalent system mass m, on film thickness, pressure and temperature variations, is being investigated.
Dieter Fauconnier +2 more
exaly +3 more sources
On the TEHL Theory, Part II: Ellipsoidal Profile Application
Tribology Transactions, 1992A simplified solution is obtained to the thermoelastohydrodynamic lubrication problem involving ellipsoidal contacts subjected to heavy loads.
Keping Hou, Czeslaw M. Rodkiewicz
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Validation of a coupled multibody and TEHL simulation by a piston/cylinder component test rig
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2022A tribological highly stressed contact in the actuating system of axial piston machines is located between the control piston and the control chamber. This paper presents a new type of component test rig for measuring the frictional force and the gap heights between piston and cylinder.
Markus Kroneis +3 more
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On the TEHL Theory. Part I: Dimensionless Problem Formulation
Tribology Transactions, 1992Since the thermoelastohydrodynamic and elastohydrodynamic lubrication (TEHL and EHL) problems are predominantly heat transfer (HT) and/or fluid mechanics (FM) problems, it is proposed that the pertinent dimensionless quantities defined, in some instances tabulated, and commonly used in these branches of engineering science (HT and FM) should be used ...
Czeslaw M. Rodkiewicz, Keping Hou
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Computational Mixed TEHL Model and Stribeck Curve of a Journal Bearing
Tribology Transactions, 2016The aim of this article is to propose a model capable of estimating the friction along a heavily loaded journal bearing under mixed and hydrodynamic lubrication.
Adrian Cubillo +2 more
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