PMID: 8970925Jan 1, 1997Paper

Residual stresses in oscillating thoracic arteries reduce circumferential stresses and stress gradients

Journal of Biomechanics
H R ChaudhryT Findley

Abstract

The purpose of this paper is to examine the effects of residual stresses and strains in the oscillating arteries on the stress distribution in the vascular wall. We employ a static theory of large elastic deformations for orthotropic material (Chuong and Fung, 1986, J. biomech. Engng 108, 189-192) with the acceleration term added to make the theory dynamic. We use the static elastic parameters of residual stresses in our analysis because the dynamic parameters are not available in the literature. Our analysis reveals that the effect of considering the residual stresses is to decrease the very large circumferential stresses at the inner wall by 62% and reduces the stress gradient through the arterial wall by 94% compared to the case when residual stresses are ignored. Thus, because the arteries do contain residual stresses, the consequent lower stresses at the inner wall and the reduced stress gradient may reduce the progression of atheroma. Our computations show that the stress gradients do not depend on the heart rate.

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Citations

Jul 20, 2007·Annals of Biomedical Engineering·Victor AlastruéManuel Doblaré
Jun 24, 2008·Computer Methods in Biomechanics and Biomedical Engineering·Nele Famaey, Jos Vander Sloten
Jul 11, 2006·International Journal of Cardiology·Gerhard A Holzapfel, Thomas C Gasser
May 6, 2003·Annual Review of Biomedical Engineering·Raymond P Vito, Stacey A Dixon
Feb 11, 2015·Journal of Theoretical Biology·Rebecca M Vandiver
Apr 4, 2003·Medical Physics·P A Doriot, P A Dorsaz
Apr 22, 1999·Journal of Biomechanical Engineering·J D Humphrey
May 26, 2007·Journal of Applied Physiology·Wei ZhangGhassan S Kassab
Oct 14, 1998·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·S Z ZhaoM W Collins
Nov 11, 2018·Biomechanics and Modeling in Mechanobiology·Minliang LiuWei Sun
Jul 3, 2007·American Journal of Physiology. Heart and Circulatory Physiology·Wei ZhangGhassan S Kassab
Apr 28, 2005·The Journal of Experimental Biology·James H Marden

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