Quantifying the stress distribution through the arterial wall is essential to studies of arterial growth and disease. Previous studies have shown that both residual stress, as measured by opening angle, and differing material properties for the media-intima and the adventitial layers affect the transmural circumferential stress distribution. Because a lack of comprehensive data on a single species and artery has led to combinations from multiple sources, this study determined the sensitivity of to published variations in both opening angle and layer thickness data. We fit material properties to previously published experimental data for pressure–diameter relations and opening angles of rabbit carotid artery, and predicted through the arterial wall at physiologic conditions. Using a one-layer model, the ratio of at the internal wall to the mean decreased from 2.34 to 0.98 as the opening angle increased from 60 to 130 deg. In a two-layer model using a 95 deg opening angle, mean in the adventitia increased (112 percent for 25 percent adventitia) and mean in the media decreased (47 percent for 25 percent adventitia). These results suggest that both residual stress and wall layers have important effects on transmural stress distribution. Thus, experimental measurements of loading curves, opening angles, and wall composition from the same species and artery are needed to accurately predict the transmural stress distribution in the arterial wall. [S0148-0731(00)02204-4]
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August 2000
Technical Briefs
Effect of Residual Stress and Heterogeneity on Circumferential Stress in the Arterial Wall
S. J. Peterson,
S. J. Peterson
Department of Mechanical Engineering, Washington University, St. Louis, MO 63130
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R. J. Okamoto
e-mail: rjo@mecf.wustl.edu
R. J. Okamoto
Department of Mechanical Engineering, Washington University, St. Louis, MO 63130
Search for other works by this author on:
S. J. Peterson
Department of Mechanical Engineering, Washington University, St. Louis, MO 63130
R. J. Okamoto
Department of Mechanical Engineering, Washington University, St. Louis, MO 63130
e-mail: rjo@mecf.wustl.edu
Contributed by the Bioengineering Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the Bioengineering Division June 6, 1999; revision received March 22, 2000. Associate Technical Editor: J. D. Humphery.
J Biomech Eng. Aug 2000, 122(4): 454-456 (3 pages)
Published Online: March 22, 2000
Article history
Received:
June 6, 1999
Revised:
March 22, 2000
Citation
Peterson , S. J., and Okamoto , R. J. (March 22, 2000). "Effect of Residual Stress and Heterogeneity on Circumferential Stress in the Arterial Wall ." ASME. J Biomech Eng. August 2000; 122(4): 454–456. https://doi.org/10.1115/1.1288210
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