On the Importance of Including Cohesive Zone Models in Modelling Mixed-Mode Aneurysm Rupture.

ABSTRACT:

Introduction

The precise mechanism of rupture in abdominal aortic aneurysms (AAAs) has not yet been uncovered. The phenomenological failure criterion of the coefficient of proportionality between von Mises stress and tissue strength does not account for any mechanistic foundation of tissue fracture. Experimental studies have shown that arterial failure is a stepwise process of fibrous delamination (mode II) and kinking (mode I) between layers. Such a mechanism has not previously been considered for AAA rupture.

Methods

In the current study we consider both von Mises stress in the wall, in addition to interlayer tractions and delamination using cohesive zone models. Firstly, we present a parametric investigation of the influence of a range of AAA anatomical features on the li

SUBMITTER: Concannon J 

PROVIDER: S-EPMC11582104 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature