150765 20260204074116.0 9461328 http://zaguan.unizar.es/record/150765/files/texto_completo.pdf Preprint info:eu-repo/date/embargoEnd/2026-02-01 1740449 http://zaguan.unizar.es/record/150765/files/texto_completo.jpg?subformat=icon icon Preprint info:eu-repo/date/embargoEnd/2026-02-01 182 (2025), 112500 [8 pp.] J. biomech. Journal of Biomechanics 0021-9290 nfo:eu-repo/grantAgreement/ES/AEI/PID2022-140219OB-I00 info:eu-repo/grantAgreement/ES/DGA-FSE/T24-20R info:eu-repo/grantAgreement/ES/DGA-IIU/1408-2018 2026-02-02-14:49:04 ARTICLE oai:zaguan.unizar.es:150765 articulos driver (orcid)0000-0002-8375-0354 Martínez, Miguel A. Universidad de Zaragoza (orcid)0000-0002-0664-5024 Peña, Estefanía Universidad de Zaragoza info:eu-repo/semantics/openAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es 5004 605 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Mec.Med.Cont. y Teor.Est. What about the mechanical behaviour and modelling of arteries in radial direction? doi 10.1016/j.jbiomech.2025.112500 sideral 142884 2025 Understanding the physiological behaviour of arteries in the radial direction is crucial for establishing a reference point to detect and analyse pathological changes. In this study, the influence of the radial component of the aorta will be investigated by performing experimental tests on porcine aortic tissue in the three main directions of the aorta: circumferential, longitudinal and radial. The results obtained in all directions will be analysed and compared in order to contribute to a comprehensive understanding of the healthy behaviour of the vessel. Our results demonstrate that the aorta exhibits nonlinear behaviour under compression and tensile loading in the radial direction. Moreover, tissue stiffening progresses more prominently under compression compared to tensile loading. We have found that the tensile stiffness in the ATA is higher compared to the other two regions examined. The Neo-Hookean and Demiray models were selected to describe the isotropic contribution when fitting the uniaxial response of the circumferential and longitudinal samples using the GOH model. Neo-Hookean model fall short ( ) in accurately replicating the observed behaviour of the aorta in the radial direction and Demiray model showing better fitting results (). Access copy available to the general public Unrestricted info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0003-4128-2836 Ríos-Ruíz, Itziar ART-2025-142884 eng