COMPARISON OF VARIOUS DISTRIBUTONS USED FOR COLLAGEN FIBRE ORIENTATIONS IN ARTERIAL LAYERS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F19%3APU134992" target="_blank" >RIV/00216305:26210/19:PU134992 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.engmech.cz/improc/2019/023_Fischer_125.pdf" target="_blank" >https://www.engmech.cz/improc/2019/023_Fischer_125.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.21495/71-0-113" target="_blank" >10.21495/71-0-113</a>

Jazyk výsledku

angličtina

Název v původním jazyce

COMPARISON OF VARIOUS DISTRIBUTONS USED FOR COLLAGEN FIBRE ORIENTATIONS IN ARTERIAL LAYERS

Popis výsledku v původním jazyce

To consider tissue anisotropy in computational models of arterial wall, information on directions of collagen fibres and their dispersion in the individual layers of the wall is needed. Many papers introduce the assumption of two fibre families although its experimental substantiation is poor. In this paper we analyse data on direction distribution of collagen fibres published in several papers, in contrast to their authors, without any anticipatory assumptions. Histograms and their different mathematical representations are compared by means of coefficient of determination R2 to obtain the best representation of the experimental data. The results show that in most of the analysed cases other distributions give better representation of the experimental data; specifically, the presented bimodal fit was surpassed with uni-, trior quadri-modal distributions or even with isotropic distribution with a large noise. This effect could be even enhanced when information criteria were applied. Finally, the best mathematical representations of the data (the best fits) are transformed into parameters used by anisotropic constitutive models in FEM analyses.

Název v anglickém jazyce

COMPARISON OF VARIOUS DISTRIBUTONS USED FOR COLLAGEN FIBRE ORIENTATIONS IN ARTERIAL LAYERS

Popis výsledku anglicky

To consider tissue anisotropy in computational models of arterial wall, information on directions of collagen fibres and their dispersion in the individual layers of the wall is needed. Many papers introduce the assumption of two fibre families although its experimental substantiation is poor. In this paper we analyse data on direction distribution of collagen fibres published in several papers, in contrast to their authors, without any anticipatory assumptions. Histograms and their different mathematical representations are compared by means of coefficient of determination R2 to obtain the best representation of the experimental data. The results show that in most of the analysed cases other distributions give better representation of the experimental data; specifically, the presented bimodal fit was surpassed with uni-, trior quadri-modal distributions or even with isotropic distribution with a large noise. This effect could be even enhanced when information criteria were applied. Finally, the best mathematical representations of the data (the best fits) are transformed into parameters used by anisotropic constitutive models in FEM analyses.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10610 - Biophysics

Projekt

<a href="/cs/project/GA18-13663S" target="_blank" >GA18-13663S: Výpočtové modelování rizika ruptury aterosklerotických plátů v krčních tepnách</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

ENGINEERING MECHANICS 2019

ISBN

978-80-87012-71-0

ISSN

—

e-ISSN

—

Počet stran výsledku

4

Strana od-do

113-116

Název nakladatele

Neuveden

Místo vydání

neuveden

Místo konání akce

Svratka

Datum konání akce

13. 5. 2019

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000613255300023