The development of a biaxially derived constitutive relation into finite element analyses of patient specific abdominal aortic aneurysms (AAA), which are localized dilation of the infrarenal aorta, was investigated. Biaxial tensile tests were performed on 26 AAA specimens in order to determine a characteristic anisotropic AAA mechanical response. It was found that the maximum principle stress contours for the uniaxial and biaxial simulations for all aneurysms display similar shapes, but the biaxial simulation consistently displayed larger stress values over larger areas of the aneurysm. It was also shown that the stresses predicted using finite element simulations could be better described using a multi-axially derived constitutive relation.
|Original language||English (US)|
|Number of pages||2|
|Journal||Advances in Bioengineering, BED|
|State||Published - Jan 1 2004|
|Event||2004 ASME International Mechanical Engineering Congress and Exposition, IMECE - Anaheim, CA, United States|
Duration: Nov 13 2004 → Nov 19 2004
ASJC Scopus subject areas