Theoretical Investigation of an Artificial Joint With Micro-Pocket-Covered Component and Biphasic Cartilage on the Opposite Articulating SurfaceSource: Journal of Biomechanical Engineering:;2003:;volume( 125 ):;issue: 004::page 425DOI: 10.1115/1.1589505Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a theoretical investigation of a geometrically idealized artificial joint with micro-pocket-covered component and biphasic cartilage on the opposite articulating surface. The fluid that exudes from the biphasic cartilage fills and pressurizes the micro-pockets. In this way, a poro-elasto-hydrodynamic regime of lubrication is developed. Assuming that lower friction would result in lower adhesive wear, and neglecting the fatigue as well as the abrasive wear, the proposed bearing system hypothetically could reduce the amount of wear debris. Equations of the linear biphasic theory are applied for the confined and unconfined compression of the cartilage. The fluid pressure and the elastic deformation of the biphasic cartilage are explicitly presented. The effective and equilibrium friction coefficients are obtained for the particular configuration of this bearing system. The micro-pockets geometrical parameters (depth, radius, surface distribution and edge radius) must be established to reduce the local contact stresses, to assure low friction forces and to minimize the biphasic cartilage damage. The influence of the applied pressure, porosity of the micro-pocket-covered component, filling time, cartilage elasticity, permeability and porosity upon the micro-pockets depth is illustrated. Our results are based upon the previously published data for a biphasic cartilage.
keyword(s): Fluids , Artificial joints , Cartilage , Friction , Stress , Bearings , Porosity AND Wear ,
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contributor author | A. N. Suciu | |
contributor author | T. Iwatsubo | |
contributor author | M. Matsuda | |
date accessioned | 2017-05-09T00:09:30Z | |
date available | 2017-05-09T00:09:30Z | |
date copyright | August, 2003 | |
date issued | 2003 | |
identifier issn | 0148-0731 | |
identifier other | JBENDY-26331#425_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/127960 | |
description abstract | This paper presents a theoretical investigation of a geometrically idealized artificial joint with micro-pocket-covered component and biphasic cartilage on the opposite articulating surface. The fluid that exudes from the biphasic cartilage fills and pressurizes the micro-pockets. In this way, a poro-elasto-hydrodynamic regime of lubrication is developed. Assuming that lower friction would result in lower adhesive wear, and neglecting the fatigue as well as the abrasive wear, the proposed bearing system hypothetically could reduce the amount of wear debris. Equations of the linear biphasic theory are applied for the confined and unconfined compression of the cartilage. The fluid pressure and the elastic deformation of the biphasic cartilage are explicitly presented. The effective and equilibrium friction coefficients are obtained for the particular configuration of this bearing system. The micro-pockets geometrical parameters (depth, radius, surface distribution and edge radius) must be established to reduce the local contact stresses, to assure low friction forces and to minimize the biphasic cartilage damage. The influence of the applied pressure, porosity of the micro-pocket-covered component, filling time, cartilage elasticity, permeability and porosity upon the micro-pockets depth is illustrated. Our results are based upon the previously published data for a biphasic cartilage. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Theoretical Investigation of an Artificial Joint With Micro-Pocket-Covered Component and Biphasic Cartilage on the Opposite Articulating Surface | |
type | Journal Paper | |
journal volume | 125 | |
journal issue | 4 | |
journal title | Journal of Biomechanical Engineering | |
identifier doi | 10.1115/1.1589505 | |
journal fristpage | 425 | |
journal lastpage | 433 | |
identifier eissn | 1528-8951 | |
keywords | Fluids | |
keywords | Artificial joints | |
keywords | Cartilage | |
keywords | Friction | |
keywords | Stress | |
keywords | Bearings | |
keywords | Porosity AND Wear | |
tree | Journal of Biomechanical Engineering:;2003:;volume( 125 ):;issue: 004 | |
contenttype | Fulltext |