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Initiation of aneurysms as a mechanical bifurcation phenomenon

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Abstract

Recent studies on localized bulging in inflated membrane tubes have shown that the initiation pressure for the onset of localization is determined through a bifurcation condition. This kind of localization has also been shown to be much more sensitive to geometrical and material imperfections than classical sub-critical bifurcation into periodic patterns. We use these results to show that the initial formation of aneurysms in human arteries may also be modeled as a bifurcation phenomenon. This bifurcation interpretation could provide a theoretical framework under which different mechanisms leading to, or reducing the risk of, aneurysm formation can be assessed in a systematic manner. In particular, this could potentially help in assessing the integrity of aneurysm repairs.

Publication Date Jan 1, 2012
Publicly Available Date Mar 28, 2024
Journal International Journal of Non-Linear Mechanics
Print ISSN 0020-7462
Publisher Elsevier
Pages 179 - 184 (6)
DOI https://doi.org/10.1016/j.ijnonlinmec.2011.05.001
Keywords Aneurysms, Membrane tubes, Localization, Bifurcation, Stability

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