Results 11 to 20 of about 1,888,493 (191)

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

Relationship Between Physical Characteristics of Cereal Polysaccharides and Soft Tribology-The Importance of Grain Source and Malting Modification. [PDF]

open access: yesFood Sci Nutr
The physical characteristics of the main starch and non‐starch polysaccharides in worts were characterized. The lubrication behaviour of the worts was analyzed by soft tribology. The data analysis showed the relationship between the molar mass and conformation of these polysaccharied and lubrication behaviour in laboratory‐produced worts.
Moreno Ravelo RC, Gastl M, Becker T.
europepmc   +2 more sources

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

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

Positive Effect of Periodic Micropatterns on Compression Ring Friction

open access: yesAdvanced Engineering Materials, Volume 25, Issue 14, July 2023., 2023
For internal combustion engines, reducing friction is becoming increasingly important to reduce emissions. It is shown that laser‐interference‐induced microtextures on amorphous carbon‐coated piston rings are able to significantly reduce the friction of the piston assembly when tested in single‐cylinder engines.
Björn Michelberger   +7 more
wiley   +1 more source

Transient torque reversals in indirect drive wind turbines

open access: yesWind Energy, Volume 26, Issue 7, Page 691-716, July 2023., 2023
Abstract The adverse effect of transient torque reversals (TTRs) on wind turbine gearboxes can be severe due to their magnitude and rapid occurrence compared with other equipment. The primary damage is caused to the bearings as the bearing loaded zone rapidly changes its direction.
Saptarshi Sarkar   +2 more
wiley   +1 more source

Tribology of dust‐stop seals of mixing machines

open access: yesLubrication Science, Volume 35, Issue 3, Page 193-206, April 2023., 2023
Abstract Dust stop seals are widely used in powder and rubber mixing industries. Design of the sealing system requires a continuous supply of pressurised lubricant, which is not recycled because of the risk of contamination. There is also the potential of large volume leakage of oil due to poor sealing, increasing operational costs and necessitating ...
Ehsan Fatourehchi   +5 more
wiley   +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  

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