Assessment of Fiber Strength in a Urinary Bladder by Using Experimental Pressure Volume Curves: An Analytical MethodSource: Journal of Biomechanical Engineering:;1986:;volume( 108 ):;issue: 004::page 301Author:A. Tözeren
DOI: 10.1115/1.3138618Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the present study, an analytical method is developed to deduce the constitutive equations of fibers embedded in a thick shell from the time-variant pressure volume curves obtained by experimental procedures. It is assumed that the spherical shell under consideration is composed of a fiber reinforced material and undergoes radial deflection, modeling the behavior of some biological shells such as urinary bladder. The fiber stress is expressed as a function of fiber strain, rate of strain and the degree of biochemical activation. The function form is chosen such that equations of mechanical equilibrium can be integrated analytically to yield chamber pressure as a function of chamber volume, time rate of change of volume and activation. Arbitrary coefficients appearing in the fiber stress-equation are also present in the resultant time-variant pressure-volume relation. These coefficients can be determined by curve-fitting commonly used clinical data such as cystometry measurements.
keyword(s): Pressure , Fibers , Urinary bladder , Shells , Equations , Stress , Equilibrium (Physics) , Constitutive equations , Modeling , Deflection , Fittings , Measurement AND Spherical shells ,
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contributor author | A. Tözeren | |
date accessioned | 2017-05-08T23:21:58Z | |
date available | 2017-05-08T23:21:58Z | |
date copyright | November, 1986 | |
date issued | 1986 | |
identifier issn | 0148-0731 | |
identifier other | JBENDY-25820#301_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/100876 | |
description abstract | In the present study, an analytical method is developed to deduce the constitutive equations of fibers embedded in a thick shell from the time-variant pressure volume curves obtained by experimental procedures. It is assumed that the spherical shell under consideration is composed of a fiber reinforced material and undergoes radial deflection, modeling the behavior of some biological shells such as urinary bladder. The fiber stress is expressed as a function of fiber strain, rate of strain and the degree of biochemical activation. The function form is chosen such that equations of mechanical equilibrium can be integrated analytically to yield chamber pressure as a function of chamber volume, time rate of change of volume and activation. Arbitrary coefficients appearing in the fiber stress-equation are also present in the resultant time-variant pressure-volume relation. These coefficients can be determined by curve-fitting commonly used clinical data such as cystometry measurements. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Assessment of Fiber Strength in a Urinary Bladder by Using Experimental Pressure Volume Curves: An Analytical Method | |
type | Journal Paper | |
journal volume | 108 | |
journal issue | 4 | |
journal title | Journal of Biomechanical Engineering | |
identifier doi | 10.1115/1.3138618 | |
journal fristpage | 301 | |
journal lastpage | 305 | |
identifier eissn | 1528-8951 | |
keywords | Pressure | |
keywords | Fibers | |
keywords | Urinary bladder | |
keywords | Shells | |
keywords | Equations | |
keywords | Stress | |
keywords | Equilibrium (Physics) | |
keywords | Constitutive equations | |
keywords | Modeling | |
keywords | Deflection | |
keywords | Fittings | |
keywords | Measurement AND Spherical shells | |
tree | Journal of Biomechanical Engineering:;1986:;volume( 108 ):;issue: 004 | |
contenttype | Fulltext |