Definition of principal material directions at irregular arterial shapes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU130044" target="_blank" >RIV/00216305:26210/18:PU130044 - isvavai.cz</a>
Result on the web
<a href="http://www.engmech.cz/improc/2018/57.pdf" target="_blank" >http://www.engmech.cz/improc/2018/57.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21495/91-8-57" target="_blank" >10.21495/91-8-57</a>
Alternative languages
Result language
angličtina
Original language name
Definition of principal material directions at irregular arterial shapes
Original language description
For computational modelling of arterial tissues anisotropic constitutive models are preferred for which knowledge on orientation of fibres (principal material directions) is needed. In this paper the impact of different approaches to definition of principal material directions in an anisotropic model of arterial wall is evaluated. Finite element models of different regular shapes were created, as well as two idealized geometries of aortic aneurysms as examples of irregular shapes. In those geometries, difference in maximum principal stresses in the arterial wall was used for evaluation of impact of uncertainty in the principal directions. It was shown that for a cylindric shape the error is negligible but it increases for more irregular geometries. For an asymmetric aortic aneurysm the impact of different orientations of principal material directions was more than 20 % which shows that the uncertainty in orientation of principal material directions may cause significant errors deteriorating completely the advantage of anisotropic material description.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10610 - Biophysics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Engineering Mechanics 2018
ISBN
978-80-86246-88-8
ISSN
1805-8256
e-ISSN
—
Number of pages
4
Pages from-to
57-60
Publisher name
Neuveden
Place of publication
Neuveden
Event location
Svratka
Event date
May 14, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000465489800014