Author： Ferrara A. Pandolfi A.
Publisher： Springer Publishing Company
ISSN： 0376-9429
Source： International Journal of Fracture, Vol.166, Iss.1-2, 2010-11, pp. : 21-33
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Abstract
In medical terms and referring to aortic arterial damage, dissection is the separation of intra-medial tissue induced by a radial tear cutting the intima (inner layer) and a portion of the underling media (middle layer). Pressurized blood pervading the tear enhances the intramural process of dissection, and may induce a subsequent formation of clots. The purpose of this study is to setup and calibrate a numerical model of arterial dissection, based on cohesive theories of fracture. The dissection model is used to characterize the critical mechanical conditions for the interlamellar propagation of a tear in the media and the influence of the reinforcing collagen fibers on the separation process.
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