Open Access

ABSTRACT

Stress Analysis in Layered Aortic Arch model: Influence of Arch Aneurysm and Wall Stiffness

by F. Gao¹, D. Tang²

1 Graduate School of Information Science, Japan Advanced Institute of Science and Technology, Japan.
2 Corresponding author, Math Dept., Worcester Polytechnic Institute, Worcester MA USA 01609.
3 Advanced Calculation Engineering Department, Surigiken Co. Ltd, Tokyo, Japan.
4 Department of Health Science, Niigata Univeristy School of Medicine, Niigata, Japan.
5 Center for Information Science, Japan Advanced Institute of Science and Technology, Japan.

The International Conference on Computational & Experimental Engineering and Sciences 2007, 1(1), 21-28. https://doi.org/10.3970/icces.2007.001.021

Abstract

Patients with aortic aneurysm, especially aortic arch aneurysm, are prone to aortic dissection. For investigation of the effects of aneurysm and wall stiffness on wall stress distribution, a nonaneurysm arch model as well as an aneurysm arch model was constructed. The fluid structure interaction was implemented in the arch model of aorta. The results show that the stresses are much higher at inflection points in the aneurysm model than in nonaneurysm model, and the stresses at media in stiffened wall are higher than in unstiffened wall. The high composite stress is located at inflection points and is much higher in the aneurysm model. The arch aneurysm and wall stiffening are important determinants of peak wall stress in aortic wall.

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