A numerical study of arterial media dissection processes

被引：45

作者：

Ferrara, A. ^{[1
]}

Pandolfi, A. ^{[1
]}

机构：

[1] Politecn Milan, Dipartimento Ingn Strutturale, I-20133 Milan, Italy

来源：

INTERNATIONAL JOURNAL OF FRACTURE | 2010年 / 166卷 / 1-2期

关键词：

Dissection; Anisotropy; Two-fiber reinforced tissues; Cohesive models; Finite elements; AORTIC DISSECTIONS; PROPAGATION; STRENGTH; FRACTURE;

D O I：

10.1007/s10704-010-9480-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：21 / 33

页数：13

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