Stress distribution of the arterial wall is an important factor in biomechanics of arteries. It has been suggested that excessive stress leads to arterial degeneration and lesion formation. In addition to circumferential tensile stress caused by luminal pressure, arterial wall contains circumferential residual stress with compressive and tensile components with maximum values on intima and adventitia respectively. The compressive residual stress component compensates part of maximum tensile stress, and therefore decreases severity of tension on endothelial lining. If an arterial ring is cut in radial direction it opens. The degree of opening angle is a determinant of circumferential residual stress. In this investigation, Finite element modeling was used to evaluate circumferential residual stress in a typical model of cross section of human aorta with differing opening angle and Young’s modulus of elasticity. Results show that residual stress values are influenced by structural and mechanical parameters. Elevation of the opening angle and stiffening of the arterial wall resulted in increase of residual stress level.
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ASME 7th Biennial Conference on Engineering Systems Design and Analysis
July 19–22, 2004
Manchester, England
ISBN:
0-7918-4174-X
PROCEEDINGS PAPER
Residual Stress and Circumferential Stress Distribution in a Finite Element Model of the Arterial Wall
Nooshin Haghighipour,
Nooshin Haghighipour
Amirkabir University of Technology, Tehran, Iran
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Mohammad Tafazzoli Shadpour,
Mohammad Tafazzoli Shadpour
Amirkabir University of Technology, Tehran, Iran
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Albert Avolio
Albert Avolio
University of New South Wales, Sydney, Australia
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Nooshin Haghighipour
Amirkabir University of Technology, Tehran, Iran
Mohammad Tafazzoli Shadpour
Amirkabir University of Technology, Tehran, Iran
Albert Avolio
University of New South Wales, Sydney, Australia
Paper No:
ESDA2004-58313, pp. 535-541; 7 pages
Published Online:
November 11, 2008
Citation
Haghighipour, N, Tafazzoli Shadpour, M, & Avolio, A. "Residual Stress and Circumferential Stress Distribution in a Finite Element Model of the Arterial Wall." Proceedings of the ASME 7th Biennial Conference on Engineering Systems Design and Analysis. Volume 2. Manchester, England. July 19–22, 2004. pp. 535-541. ASME. https://doi.org/10.1115/ESDA2004-58313
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