Artificial Surface Roughness Deformation in the Starved EHL Contacts

Starved elastohydrodynamically lubricated contact is described as deviation from fully flooded contact due to insufficient lubricant supply. This insufficiency causes thinner lubricant film compared to fully flooded regime. Thinner lubricant film means that rolling surfaces are closer together. Each...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Kostal David, Sperka Petr, Krupka Ivan, Hartl Martin
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2018
Materias:	ehd starvation artificial roughness elastic deformation amplitude attenuation model Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/8a1d15e0927a4b40bd650be621492cbe
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:8a1d15e0927a4b40bd650be621492cbe
record_format	dspace
spelling	oai:doaj.org-article:8a1d15e0927a4b40bd650be621492cbe2021-11-05T09:19:30ZArtificial Surface Roughness Deformation in the Starved EHL Contacts1881-219810.2474/trol.13.1https://doaj.org/article/8a1d15e0927a4b40bd650be621492cbe2018-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/13/1/13_1/_pdf/-char/enhttps://doaj.org/toc/1881-2198Starved elastohydrodynamically lubricated contact is described as deviation from fully flooded contact due to insufficient lubricant supply. This insufficiency causes thinner lubricant film compared to fully flooded regime. Thinner lubricant film means that rolling surfaces are closer together. Each surface has its own roughness, which is created by machining of the surface and is composed by many individual asperities. These asperities are elastically deformed while passing through the contact area of the EHL contact as well as whole contact surface. It is important to know the magnitude of the deformation. Especially in the starved contact where is increased risk of surface wear due to mutual contact of asperities on the opposite surfaces. This paper presents experimental work on the topic of the surface roughness deformation, which is passing by contact. Analytical method called amplitude attenuation theory was used to predict deformation of the artificial asperity (ridge) under starved conditions. Deformations provided by predictions were compared with the experiments and from both method is clear that roughness deformation is increasing with the progressing starvation - thinning the lubricant film. Magnitude of the deformation however depends on the asperity profile.Kostal DavidSperka PetrKrupka IvanHartl MartinJapanese Society of Tribologistsarticleehdstarvationartificial roughnesselastic deformationamplitude attenuation modelPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 13, Iss 1, Pp 1-7 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	ehd starvation artificial roughness elastic deformation amplitude attenuation model Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	ehd starvation artificial roughness elastic deformation amplitude attenuation model Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Kostal David Sperka Petr Krupka Ivan Hartl Martin Artificial Surface Roughness Deformation in the Starved EHL Contacts
description	Starved elastohydrodynamically lubricated contact is described as deviation from fully flooded contact due to insufficient lubricant supply. This insufficiency causes thinner lubricant film compared to fully flooded regime. Thinner lubricant film means that rolling surfaces are closer together. Each surface has its own roughness, which is created by machining of the surface and is composed by many individual asperities. These asperities are elastically deformed while passing through the contact area of the EHL contact as well as whole contact surface. It is important to know the magnitude of the deformation. Especially in the starved contact where is increased risk of surface wear due to mutual contact of asperities on the opposite surfaces. This paper presents experimental work on the topic of the surface roughness deformation, which is passing by contact. Analytical method called amplitude attenuation theory was used to predict deformation of the artificial asperity (ridge) under starved conditions. Deformations provided by predictions were compared with the experiments and from both method is clear that roughness deformation is increasing with the progressing starvation - thinning the lubricant film. Magnitude of the deformation however depends on the asperity profile.
format	article
author	Kostal David Sperka Petr Krupka Ivan Hartl Martin
author_facet	Kostal David Sperka Petr Krupka Ivan Hartl Martin
author_sort	Kostal David
title	Artificial Surface Roughness Deformation in the Starved EHL Contacts
title_short	Artificial Surface Roughness Deformation in the Starved EHL Contacts
title_full	Artificial Surface Roughness Deformation in the Starved EHL Contacts
title_fullStr	Artificial Surface Roughness Deformation in the Starved EHL Contacts
title_full_unstemmed	Artificial Surface Roughness Deformation in the Starved EHL Contacts
title_sort	artificial surface roughness deformation in the starved ehl contacts
publisher	Japanese Society of Tribologists
publishDate	2018
url	https://doaj.org/article/8a1d15e0927a4b40bd650be621492cbe
work_keys_str_mv	AT kostaldavid artificialsurfaceroughnessdeformationinthestarvedehlcontacts AT sperkapetr artificialsurfaceroughnessdeformationinthestarvedehlcontacts AT krupkaivan artificialsurfaceroughnessdeformationinthestarvedehlcontacts AT hartlmartin artificialsurfaceroughnessdeformationinthestarvedehlcontacts
_version_	1718444422593511424

Artificial Surface Roughness Deformation in the Starved EHL Contacts

Ejemplares similares