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

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

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.

• Language: English
• Keywords: patient-specific artery, common carotid artery, residual stresses, arterial zero-stress state, thermomechanics, finite element method
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2016
• Number of pages: f. 1-19
• Numbering: Vol. 8, nr. 11
• PID: 20.500.12556/RUL-160896-feb2aa9d-2c2e-4e94-7e11-b56657710554
• UDC: 531:616.13(045)
• ISSN on article: 1687-8140
• DOI: 10.1177/1687814016679312
• COBISS.SI-ID: 15115035
• Publication date in RUL: 05.09.2024

Record is a part of a journal

• Title: Advances in mechanical engineering
• Shortened title: Adv. Mech. Eng. (Online)
• Publisher: Hindawi Publishing Corporation
• ISSN: 1687-8140
• COBISS.SI-ID: 13232662

Licences

• License: CC BY 3.0, Creative Commons Attribution 3.0 Unported
• Link: https://creativecommons.org/licenses/by/3.0/deed.en
• Description: You are free to reproduce and redistribute the material in any medium or format. You are free to remix, transform, and build upon the material for any purpose, even commercially. You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Secondary language

• Language: Slovenian
• Keywords: človeška arterija, skupna karotidna arterija, zaostale napetosti, breznapetostno stanje arterij, termomehanika, metoda končnih elementov, nega, bolniki