The maximum stresses in aortic aneurysms calculated on the dependence of mesh density

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F13%3APU108209" target="_blank" >RIV/00216305:26210/13:PU108209 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
The maximum stresses in aortic aneurysms calculated on the dependence of mesh density
Original language description
This paper presents the influence of finite element mesh density on the resulting maximum stresses in models of patient-specific abdominal aortic aneurysms (AAAs). We present six patient-specific model geometries and two Yeoh-type constitutive models, where is a different mesh density confronted. All simulations appear from a numerical reconstruction of the unloaded geometry of the AAA. It has been demonstrated that results (wall stresses) are substantially mesh dependent; in most cases the peak wall stress increases with cumulative number of elements throughout wall thickness caused by a better description of the stress gradient in the critical point. It has been shown that this effect is more marked when Vande Geest constitutive model with higher strain stiffening is used than Raghavan-Vorp material model. To reduced the stress gradient we taken a residual stress into account; however the results indicate that three elements throughout the wall thickness are advised also in this case
Czech name
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Czech description
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Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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