Micropolar Fluid Poro-Elastic Squeeze Film Lubrication between a Cylinder and a Rough Flat Plate — A Special Reference to Synovial Joint Lubrication

In the present paper the effect of micropolar squeeze film lubrication between a cylinder and a poroelastic flat plate is presented. The synovial fluid is modeled as the micropolar fluid and the articular cartilage is considered to be a poroelastic in nature. The modified averaged Reynolds equation...

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Autores principales: Neminath B. Naduvinamani, Savitramma G. Katti
Formato: article
Lenguaje:EN
Publicado: Japanese Society of Tribologists 2014
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Acceso en línea:https://doaj.org/article/baa58890d2a042cf8492c01475c8dc87
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spelling oai:doaj.org-article:baa58890d2a042cf8492c01475c8dc872021-11-05T09:23:40ZMicropolar Fluid Poro-Elastic Squeeze Film Lubrication between a Cylinder and a Rough Flat Plate — A Special Reference to Synovial Joint Lubrication1881-219810.2474/trol.9.21https://doaj.org/article/baa58890d2a042cf8492c01475c8dc872014-02-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/9/1/9_21/_pdf/-char/enhttps://doaj.org/toc/1881-2198In the present paper the effect of micropolar squeeze film lubrication between a cylinder and a poroelastic flat plate is presented. The synovial fluid is modeled as the micropolar fluid and the articular cartilage is considered to be a poroelastic in nature. The modified averaged Reynolds equation accounting for the randomized surface roughness structure as well as elastic nature of articular cartilage with micropolar fluid as lubricant is derived. The Christensen stochastic theory for rough surfaces is used to study the effect of two types of one dimensional surface roughness on the squeeze film characteristics of a cylinder and a rough poroelastic flat plate with micropolar fluid. Results are presented for the performance of the synovial joint with the experimentally validated values of the cartilage elasticity and permeability. It is observed that, the transverse roughness pattern improves the squeeze film characteristics whereas the squeeze film bearing performance is affected due to the presence of one-dimensional longitudinal surface roughness. These effects are more pronounced for the micropolar fluids.Neminath B. NaduvinamaniSavitramma G. KattiJapanese Society of Tribologistsarticlesynovial jointsurface roughnessporo-elasticarticular cartilagemicropolar fluidsqueeze filmPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 9, Iss 1, Pp 21-30 (2014)
institution DOAJ
collection DOAJ
language EN
topic synovial joint
surface roughness
poro-elastic
articular cartilage
micropolar fluid
squeeze film
Physics
QC1-999
Engineering (General). Civil engineering (General)
TA1-2040
Mechanical engineering and machinery
TJ1-1570
Chemistry
QD1-999
spellingShingle synovial joint
surface roughness
poro-elastic
articular cartilage
micropolar fluid
squeeze film
Physics
QC1-999
Engineering (General). Civil engineering (General)
TA1-2040
Mechanical engineering and machinery
TJ1-1570
Chemistry
QD1-999
Neminath B. Naduvinamani
Savitramma G. Katti
Micropolar Fluid Poro-Elastic Squeeze Film Lubrication between a Cylinder and a Rough Flat Plate — A Special Reference to Synovial Joint Lubrication
description In the present paper the effect of micropolar squeeze film lubrication between a cylinder and a poroelastic flat plate is presented. The synovial fluid is modeled as the micropolar fluid and the articular cartilage is considered to be a poroelastic in nature. The modified averaged Reynolds equation accounting for the randomized surface roughness structure as well as elastic nature of articular cartilage with micropolar fluid as lubricant is derived. The Christensen stochastic theory for rough surfaces is used to study the effect of two types of one dimensional surface roughness on the squeeze film characteristics of a cylinder and a rough poroelastic flat plate with micropolar fluid. Results are presented for the performance of the synovial joint with the experimentally validated values of the cartilage elasticity and permeability. It is observed that, the transverse roughness pattern improves the squeeze film characteristics whereas the squeeze film bearing performance is affected due to the presence of one-dimensional longitudinal surface roughness. These effects are more pronounced for the micropolar fluids.
format article
author Neminath B. Naduvinamani
Savitramma G. Katti
author_facet Neminath B. Naduvinamani
Savitramma G. Katti
author_sort Neminath B. Naduvinamani
title Micropolar Fluid Poro-Elastic Squeeze Film Lubrication between a Cylinder and a Rough Flat Plate — A Special Reference to Synovial Joint Lubrication
title_short Micropolar Fluid Poro-Elastic Squeeze Film Lubrication between a Cylinder and a Rough Flat Plate — A Special Reference to Synovial Joint Lubrication
title_full Micropolar Fluid Poro-Elastic Squeeze Film Lubrication between a Cylinder and a Rough Flat Plate — A Special Reference to Synovial Joint Lubrication
title_fullStr Micropolar Fluid Poro-Elastic Squeeze Film Lubrication between a Cylinder and a Rough Flat Plate — A Special Reference to Synovial Joint Lubrication
title_full_unstemmed Micropolar Fluid Poro-Elastic Squeeze Film Lubrication between a Cylinder and a Rough Flat Plate — A Special Reference to Synovial Joint Lubrication
title_sort micropolar fluid poro-elastic squeeze film lubrication between a cylinder and a rough flat plate — a special reference to synovial joint lubrication
publisher Japanese Society of Tribologists
publishDate 2014
url https://doaj.org/article/baa58890d2a042cf8492c01475c8dc87
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