Results 11 to 20 of about 62,392 (135)

High Order Finite Element Solution of Elastohydrodynamic Lubrication Problems [PDF]

open access: yes, 2006
In this thesis, a high-order finite element scheme, based upon the Discontinuous Galerkin (DG) method, is introduced to solve one- and two-dimensional Elastohydrodynamic Lubrication (EHL) problems (line contact and point contact). This thesis provides an
Lu, Hongqiang
core   +9 more sources

Adaptive Numerical Methods for Elastohydrodynamic Lubrication [PDF]

open access: yes, 2001
Numerical solutions to elastohydrodynamic lubrication problems have been computed for the last half century. Over the past decade multilevel techniques have been successfully applied in several solvers and significant speed-ups achieved.
Goodyer, Christopher Edward
core   +9 more sources

Efficient finite element simulation of full-system elastohydrodynamic lubrication problems [PDF]

open access: yes, 2012
This thesis is concerned with the efficient numerical solution of problems of elastohydrodynamic lubrication (EHL). Our approach is to consider fully-coupled models in which the governing equations for the lubricating film, the elastic deformation and ...
Ahmed, Sarfraz
core   +6 more sources

Adjoint Error Estimation for Elastohydrodynamic Lubrication [PDF]

open access: yes, 2008
In this thesis, adjoint error estimation techniques are applied to complex elastohydrodynamic lubrication (EHL) problems. A functional is introduced, namely the friction, and justification is provided as to why this quantity, and hence its accuracy, is ...
Hart, Daniel Edward
core   +7 more sources

A multiscale method for optimising surface topography in elastohydrodynamic lubrication (EHL) using metamodels [PDF]

open access: yesStructural and Multidisciplinary Optimization, 2016
The frictional performance of a bearing is of significant interest in any mechanical system where there are lubricated surfaces under load and in relative motion. Surface topography plays a major role in determining the coefficient of friction for the bearing because the size of the fluid film and topography are of a comparable order.
De Boer, GN   +5 more
openaire   +4 more sources

Understanding the Mechanism of Load-Carrying Capacity between Parallel Rough Surfaces through a Deterministic Mixed Lubrication Model

open access: yesLubricants, 2022
Experimental results have confirmed that parallel rough surfaces can be separated by a full fluid film. However, such a lift-off effect is not expected by the traditional Reynolds theory.
Yuechang Wang   +6 more
doaj   +1 more source

Behaviors of a micro oil droplet in an EHL contact

open access: yesFriction, 2016
Oil–air lubrication supplies lubricants in the form of droplets to elastohydrodynamic lubrication (EHL) contacts, such as those in high-speed spindle bearings.
Xinming Li   +4 more
doaj   +1 more source

Measurements of viscosity profile in elastohydrodynamic lubrication film using fluorescence method under various contact pressure conditions

open access: yesNihon Kikai Gakkai ronbunshu, 2022
This paper describes rheological properties of hydrodynamic and elastohydrodynamic lubrication (EHL) film under various contact pressure conditions using the fluorescence measurement method.
Takefumi OTSU
doaj   +1 more source

An Analytical Approach for Predicting EHL Friction: Usefulness and Limitations

open access: yesLubricants, 2022
The article studies the friction coefficient in elastohydrodynamic lubrication (EHL) by means of analytically obtained equations for different contact geometries.
Javier Echávarri Otero   +4 more
doaj   +1 more source

Remarks on Modeling the Oil Film Generation of Rod Seals

open access: yesLubricants, 2021
The oil film generation of a U-cup rod seal and the oil film thickness on the rod after outstroke were analyzed analytically, numerically, and experimentally. The analyzed sealing system consists of an unmodified, commercially available U-cup, a polished
Oliver Feuchtmüller   +3 more
doaj   +1 more source

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