Effect of Pressure Dependent Viscosity on Couple Stress Squeeze Film Lubrication between Rough Parallel Plates

In this paper, a theoretical study of the effect of pressure dependent viscosity on couple stress squeeze film lubrication between rough parallel plates is analyzed on the basis of Barus experimental results. Stokes micro continuum theory of couple stress fluids and Christensen’s stochastic theory f...

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Autores principales:	Neminath Bujappa Naduvinamani, Siddangouda Apparao, Hiremath Ayyappa Gundayya, Shivraj Nagshetty Biradar
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2015
Materias:	surface roughness couple stress fluids parallel plates squeeze film pressure dependent viscosity 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/c4a41f75e60d43d39c21a78c83180cad
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spelling	oai:doaj.org-article:c4a41f75e60d43d39c21a78c83180cad2021-11-05T09:22:45ZEffect of Pressure Dependent Viscosity on Couple Stress Squeeze Film Lubrication between Rough Parallel Plates1881-219810.2474/trol.10.76https://doaj.org/article/c4a41f75e60d43d39c21a78c83180cad2015-03-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/10/1/10_76/_pdf/-char/enhttps://doaj.org/toc/1881-2198In this paper, a theoretical study of the effect of pressure dependent viscosity on couple stress squeeze film lubrication between rough parallel plates is analyzed on the basis of Barus experimental results. Stokes micro continuum theory of couple stress fluids and Christensen’s stochastic theory for the lubrication of rough surfaces have been used for the derivation of generalized stochastic Reynold’s type equation with pressure dependent viscosity. In the context of Christensen’s theory, the two types of one dimensional roughness (Longitudinal and transverse) patterns are considered. Expressions for the squeeze film pressure, the load carrying capacity and time-height relations are obtained. It is found that, the effect of roughness parameter is to increase (decrease) the load carrying capacity and the response time for transverse (longitudinal) roughness patterns as compared to the smooth case. Further the effect of pressure dependent viscosity variation is to reduce the load carrying capacity and squeeze film time as compared to the constant viscosity case.Neminath Bujappa NaduvinamaniSiddangouda ApparaoHiremath Ayyappa GundayyaShivraj Nagshetty BiradarJapanese Society of Tribologistsarticlesurface roughnesscouple stress fluidsparallel platessqueeze filmpressure dependent viscosityPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 10, Iss 1, Pp 76-83 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	surface roughness couple stress fluids parallel plates squeeze film pressure dependent viscosity Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	surface roughness couple stress fluids parallel plates squeeze film pressure dependent viscosity Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Neminath Bujappa Naduvinamani Siddangouda Apparao Hiremath Ayyappa Gundayya Shivraj Nagshetty Biradar Effect of Pressure Dependent Viscosity on Couple Stress Squeeze Film Lubrication between Rough Parallel Plates
description	In this paper, a theoretical study of the effect of pressure dependent viscosity on couple stress squeeze film lubrication between rough parallel plates is analyzed on the basis of Barus experimental results. Stokes micro continuum theory of couple stress fluids and Christensen’s stochastic theory for the lubrication of rough surfaces have been used for the derivation of generalized stochastic Reynold’s type equation with pressure dependent viscosity. In the context of Christensen’s theory, the two types of one dimensional roughness (Longitudinal and transverse) patterns are considered. Expressions for the squeeze film pressure, the load carrying capacity and time-height relations are obtained. It is found that, the effect of roughness parameter is to increase (decrease) the load carrying capacity and the response time for transverse (longitudinal) roughness patterns as compared to the smooth case. Further the effect of pressure dependent viscosity variation is to reduce the load carrying capacity and squeeze film time as compared to the constant viscosity case.
format	article
author	Neminath Bujappa Naduvinamani Siddangouda Apparao Hiremath Ayyappa Gundayya Shivraj Nagshetty Biradar
author_facet	Neminath Bujappa Naduvinamani Siddangouda Apparao Hiremath Ayyappa Gundayya Shivraj Nagshetty Biradar
author_sort	Neminath Bujappa Naduvinamani
title	Effect of Pressure Dependent Viscosity on Couple Stress Squeeze Film Lubrication between Rough Parallel Plates
title_short	Effect of Pressure Dependent Viscosity on Couple Stress Squeeze Film Lubrication between Rough Parallel Plates
title_full	Effect of Pressure Dependent Viscosity on Couple Stress Squeeze Film Lubrication between Rough Parallel Plates
title_fullStr	Effect of Pressure Dependent Viscosity on Couple Stress Squeeze Film Lubrication between Rough Parallel Plates
title_full_unstemmed	Effect of Pressure Dependent Viscosity on Couple Stress Squeeze Film Lubrication between Rough Parallel Plates
title_sort	effect of pressure dependent viscosity on couple stress squeeze film lubrication between rough parallel plates
publisher	Japanese Society of Tribologists
publishDate	2015
url	https://doaj.org/article/c4a41f75e60d43d39c21a78c83180cad
work_keys_str_mv	AT neminathbujappanaduvinamani effectofpressuredependentviscosityoncouplestresssqueezefilmlubricationbetweenroughparallelplates AT siddangoudaapparao effectofpressuredependentviscosityoncouplestresssqueezefilmlubricationbetweenroughparallelplates AT hiremathayyappagundayya effectofpressuredependentviscosityoncouplestresssqueezefilmlubricationbetweenroughparallelplates AT shivrajnagshettybiradar effectofpressuredependentviscosityoncouplestresssqueezefilmlubricationbetweenroughparallelplates
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Effect of Pressure Dependent Viscosity on Couple Stress Squeeze Film Lubrication between Rough Parallel Plates

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