131550 20240319080951.0 doi 10.1016/j.jbiomech.2021.110909 sideral 128401 ART-2022-128401 eng Peña, Juan A. Universidad de Zaragoza (orcid)0000-0002-4268-7424 Biomechanical characterization and constitutive modeling of the layer-dissected residual strains and mechanical properties of abdominal porcine aorta 2022 Access copy available to the general public Unrestricted We analyze the residual stresses and mechanical properties of layer-dissected infrarenal abdominal aorta (IAA). We measured the axial pre-stretch and opening angle and performed uniaxial tests to study and compare the mechanical behavior of both intact and layer-dissected porcine IAA samples under physiological loads. Finally, some of the most popular anisotropic hyperelastic constitutive models (GOH and microfiber models) were proposed to estimate the mechanical properties of the abdominal aorta by least-square fitting of the recorded in-vitro uniaxial test results. The results show that the residual stresses are layer dependent. In all cases, we found that the OA in the media layer is lower than in the whole artery, the intima and the adventitia. For the axial pre-stretch, we found that the adventitia and the media were slightly stretched in the environment of the intact arterial strip, whereas the intima appears to be compressed. Regarding the mechanical properties, the media seems to be the softest layer over the whole deformation domain showing high anisotropy, while the intima and adventitia exhibit considerable stiffness and a lower anisotropy response. Finally, all the hyperelastic anisotropic models considered in this study provided a reasonable approximation of the experimental data. The GOH model showed the best fitting. info:eu-repo/grantAgreement/ES/DGA-FSE/T24-20R info:eu-repo/grantAgreement/ES/MICINN/PID2019-107517RB-I00 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 2.4 2022 ENGINEERING, BIOMEDICAL 67 / 96 = 0.698 2022 Q3 T3 BIOPHYSICS 46 / 70 = 0.657 2022 Q3 T2 0.699 2022 Rehabilitation 2022 Q1 Biophysics 2022 Q2 Sports Science 2022 Q2 Biomedical Engineering 2022 Q2 Orthopedics and Sports Medicine 2022 Q2 4.9 2022 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Cilla, M. Universidad de Zaragoza (orcid)0000-0002-8503-9291 Martínez, Miguel A. Universidad de Zaragoza (orcid)0000-0002-8375-0354 Peña, Estefania Universidad de Zaragoza (orcid)0000-0002-0664-5024 5002 305 Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Expresión Gráfica en Ing. 5004 605 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Mec.Med.Cont. y Teor.Est. 132 (2022), 110909 [9 pp.] J. biomech. Journal of Biomechanics 0021-9290 3481672 http://zaguan.unizar.es/record/131550/files/texto_completo.pdf Postprint 1845211 http://zaguan.unizar.es/record/131550/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:131550 articulos driver 2024-03-18-13:04:04 ARTICLE