ABSTRACT:
An aneurysm is a localized dilation of a weakened wall in an artery. It is one of the few topics that have attracted the attention of both fluid dynamicists and solid mechanicists. The current wisdom about aneurysm initiation, growth and rupture is that aneurysms are caused by pathological changes which are then followed immediately by remodelling/growth. In this talk, we shall explore the possibility that pathological changes may be followed by sudden localized bulging before the biological process of remodelling/growth kicks in. We use localized bulging in pressurized membrane tubes as an analogous example and show how localized bulging depends on material constitution and loading conditions.