An approach to consider the arterial residual stresses in modelling of a patient-specific artery

Urevc, Janez (avtor), Halilovič, Miroslav (avtor), Brumen, Milan (avtor), Štok, Boris (avtor)

In this work, the residual stress state of a human common carotid artery is predicted using the so-called thermomecha- nical analogy approach. The purpose of the approach is to enable consistent mapping of residual stresses and the respec- tive configuration from a circular arterial segment to a patient-specific arterial geometry. This is achieved by applying proper volumetric dilatations to the actual arterial stress-free in vivo geometry, which makes use of the analogy that states that the bending stresses can be obtained on an equivalent manner by applying proper thermal dilatations. The common carotid artery data are obtained in vivo from a healthy 28-year-old man using non-invasive methods. The pre- dicted residual stresses of the common carotid artery are in good quantitative agreement with the data from prior work in this field. The approach is validated by predicting the common carotid artery zero-stress state configuration, where a sector-like (cut-open) state is obtained. With this approach, it is thus possible to predict the residual stresses as well as the configuration of patient-specific arterial geometry without the need to model its cut-open zero-stress configuration.

• Jezik: Angleški jezik
• Ključne besede: patient-specific artery, common carotid artery, residual stresses, arterial zero-stress state, thermomechanics, finite element method
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2016
• Št. strani: f. 1-19
• Številčenje: Vol. 8, nr. 11
• PID: 20.500.12556/RUL-160896-feb2aa9d-2c2e-4e94-7e11-b56657710554
• UDK: 531:616.13(045)
• ISSN pri članku: 1687-8140
• DOI: 10.1177/1687814016679312
• COBISS.SI-ID: 15115035
• Datum objave v RUL: 05.09.2024

Gradivo je del revije

• Naslov: Advances in mechanical engineering
• Skrajšan naslov: Adv. Mech. Eng. (Online)
• Založnik: Hindawi Publishing Corporation
• ISSN: 1687-8140
• COBISS.SI-ID: 13232662

Licence

• Licenca: CC BY 3.0, Creative Commons Priznanje avtorstva 3.0 Nedoločena
• Povezava: https://creativecommons.org/licenses/by/3.0/deed.sl
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Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: človeška arterija, skupna karotidna arterija, zaostale napetosti, breznapetostno stanje arterij, termomehanika, metoda končnih elementov, nega, bolniki