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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   +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   +7 more sources

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   +7 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

Wavelet based decoupled method for the investigation of surface roughness effects in elastohydrodynamic lubrication problems using couple stress fluid

open access: yesAin Shams Engineering Journal, 2018
In this paper, we developed the wavelet based decoupled method for the numerical solution of elastohydrodynamic lubrication problems. The standard decoupled method with Newton-generalized minimum residual procedure performs poorly or may break down when ...
S.C. Shiralashetti, M.H. Kantli
doaj   +1 more source

Analysis of Transient Elastohydrodynamic Lubrication of Asymmetric Polymer Planetary Gears

open access: yesJixie chuandong, 2023
Asymmetric polymer gears are used in planetary gear transmission system to cater for the design requirements of compact and lightweight mechanical structure.
Wang Youqiang   +4 more
doaj  

Transient mixed thermo-elastohydrodynamic lubrication in multi-speed transmissions [PDF]

open access: yes, 2012
Noise, vibration and harshness (NVH) refinement as well as thermo-mechanical efficiency are the key design attributes of modern compact multi-speed transmissions.
Teodorescu, M.   +14 more
core   +1 more source

Study on the Coupling of Gear Dynamics and Elastohydrodynamic Lubrication

open access: yesJixie chuandong, 2020
To explore the coupling effect of gear dynamics characteristics and elastohydrodynamic lubrication, considering the influence of surface roughness and the time-varying meshing stiffness on gear dynamics behavior, the six-degree-freedom friction dynamics ...
Jian Guangxiao   +3 more
doaj  

Comment on Neupert, T.; Bartel, D. Evaluation of Various Shear-Thinning Models for Squalane Using Traction Measurements, TEHD and NEMD Simulations. Lubricants 2023, 11, 178

open access: yesLubricants, 2023
The field of EHL (elastohydrodynamic lubrication) may be the only one in science in which a model for shear-dependent viscosity would be evaluated by means other than viscometer measurements [...]
Scott Bair
doaj   +1 more source

Study of film formation in EHD contacts using a novel method based on electrical capacitance [PDF]

open access: yes, 2011
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The elastohydrodynamic lubrication regime (EHD) is found in many machine elements, such as rolling element bearings, gears, cam/tappet, where a combination ...
Furtuna, Marian Dumitru
core   +7 more sources

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