Collapse of Arteries Subjected to an External Band of PressureSource: Journal of Biomechanical Engineering:;1980:;volume( 102 ):;issue: 001::page 8DOI: 10.1115/1.3138203Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Collapse of arteries subjected to a band of hydrostatic pressure of finite length is analyzed. The vessel is treated as a long, thin, linearly elastic, orthotropic cylindrical shell, homogeneous in composition, and with negligible radial stresses. Blood in the vessel is treated as a Newtonian fluid and the Reynolds number is of order 1. Results are obtained for effects of the following factors on arterial collapse: intraluminal pressure, length of the pressure band, elastic properties of the vessel, initial stress both longitudinally and circumferentially, blood flow Reynolds number, compressibility, and wall thickness to radius ratio. It is found that the predominant parameter influencing vessel collapse for the intermediate range of vessel size and blood flow Reynolds numbers studied is the preconstricted intraluminal pressure. For pressure bands less than about 10 vessel radii the collapse pressure increases sharply with increasing intraluminal pressure. Initial axial prestress is found to be highly stabilizing for small band lengths. The effects of fluid flow are found to be small for pressure bands of less than 100 vessel radii. No dramatic orthotropic vessel behavior is apparent. The analysis shows that any reduction in intraluminal pressure, such as that produced by an upstream obstruction, will significantly lower the required collapse pressure. Medical implications of this analysis to Legg-Perthes disease are discussed.
keyword(s): Pressure , Collapse , Vessels , Reynolds number , Stress , Blood flow , Wall thickness , Biomedicine , Diseases , Hydrostatic pressure , Blood , Pipes , Compressibility , Fluid dynamics , Elasticity AND Fluids ,
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contributor author | A. M. Hecht | |
contributor author | H. Yeh | |
contributor author | S. M. K. Chung | |
date accessioned | 2017-05-08T23:08:16Z | |
date available | 2017-05-08T23:08:16Z | |
date copyright | February, 1980 | |
date issued | 1980 | |
identifier issn | 0148-0731 | |
identifier other | JBENDY-25645#8_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/93050 | |
description abstract | Collapse of arteries subjected to a band of hydrostatic pressure of finite length is analyzed. The vessel is treated as a long, thin, linearly elastic, orthotropic cylindrical shell, homogeneous in composition, and with negligible radial stresses. Blood in the vessel is treated as a Newtonian fluid and the Reynolds number is of order 1. Results are obtained for effects of the following factors on arterial collapse: intraluminal pressure, length of the pressure band, elastic properties of the vessel, initial stress both longitudinally and circumferentially, blood flow Reynolds number, compressibility, and wall thickness to radius ratio. It is found that the predominant parameter influencing vessel collapse for the intermediate range of vessel size and blood flow Reynolds numbers studied is the preconstricted intraluminal pressure. For pressure bands less than about 10 vessel radii the collapse pressure increases sharply with increasing intraluminal pressure. Initial axial prestress is found to be highly stabilizing for small band lengths. The effects of fluid flow are found to be small for pressure bands of less than 100 vessel radii. No dramatic orthotropic vessel behavior is apparent. The analysis shows that any reduction in intraluminal pressure, such as that produced by an upstream obstruction, will significantly lower the required collapse pressure. Medical implications of this analysis to Legg-Perthes disease are discussed. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Collapse of Arteries Subjected to an External Band of Pressure | |
type | Journal Paper | |
journal volume | 102 | |
journal issue | 1 | |
journal title | Journal of Biomechanical Engineering | |
identifier doi | 10.1115/1.3138203 | |
journal fristpage | 8 | |
journal lastpage | 22 | |
identifier eissn | 1528-8951 | |
keywords | Pressure | |
keywords | Collapse | |
keywords | Vessels | |
keywords | Reynolds number | |
keywords | Stress | |
keywords | Blood flow | |
keywords | Wall thickness | |
keywords | Biomedicine | |
keywords | Diseases | |
keywords | Hydrostatic pressure | |
keywords | Blood | |
keywords | Pipes | |
keywords | Compressibility | |
keywords | Fluid dynamics | |
keywords | Elasticity AND Fluids | |
tree | Journal of Biomechanical Engineering:;1980:;volume( 102 ):;issue: 001 | |
contenttype | Fulltext |