Biomechanical characterization of the passive response of the thoracic aorta in chronic hypoxic newborn lambs using an evolutionary strategy
Abstract The present study involves experiments and modelling aimed at characterizing the passive structural mechanical behavior of the chronic hypoxic lamb thoracic aorta, whose gestation, birth and postnatal period were carried at high altitude (3600 masl). To this end, the mechanical response was...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-07-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-93267-9 |
| _version_ | 1819036888767397888 |
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| author | Eugenio Rivera Claudio Canales Matías Pacheco Claudio García-Herrera Demetrio Macías Diego J. Celentano Emilio A. Herrera |
| author_facet | Eugenio Rivera Claudio Canales Matías Pacheco Claudio García-Herrera Demetrio Macías Diego J. Celentano Emilio A. Herrera |
| author_sort | Eugenio Rivera |
| collection | DOAJ |
| description | Abstract The present study involves experiments and modelling aimed at characterizing the passive structural mechanical behavior of the chronic hypoxic lamb thoracic aorta, whose gestation, birth and postnatal period were carried at high altitude (3600 masl). To this end, the mechanical response was studied via tensile and pressurization tests. The tensile and pressurization tests measurements were used simultaneously to calibrate the material parameters of the Gasser–Holzapfel–Ogden (GHO) hyperelasctic anisotropic constitutive model through an analytical-numerical optimization procedure solved with an evolutionary strategy that guarantees a stable response of the model. The model and procedure of calibration adequately adjust to the material behavior in a wide deformation range with an appropriate physical description. The results of this study predict the mechanical response of the lamb thoracic aorta under generalized loading states like those that can occur in physiological conditions and/or in systemic arterial hypertension. Finally, the novel use of the evolutionary strategy, together with the set of experiments and tools used in this study, provide a robust alternative to validate biomechanical characterizations. |
| first_indexed | 2024-12-21T08:12:41Z |
| format | Article |
| id | doaj.art-5721c5dd1ee64d9aa011082b4068007b |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-21T08:12:41Z |
| publishDate | 2021-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-5721c5dd1ee64d9aa011082b4068007b2022-12-21T19:10:38ZengNature PortfolioScientific Reports2045-23222021-07-0111111110.1038/s41598-021-93267-9Biomechanical characterization of the passive response of the thoracic aorta in chronic hypoxic newborn lambs using an evolutionary strategyEugenio Rivera0Claudio Canales1Matías Pacheco2Claudio García-Herrera3Demetrio Macías4Diego J. Celentano5Emilio A. Herrera6Departamento de Ingeniería Mecánica, Universidad de Santiago de Chile (USACH)Departamento de Ingeniería Mecánica, Universidad de Santiago de Chile (USACH)Departamento de Ingeniería Mecánica, Universidad de Santiago de Chile (USACH)Departamento de Ingeniería Mecánica, Universidad de Santiago de Chile (USACH)ICD, P2MN, L2n, Université de Technologie de Troyes, ERL 7004, CNRSDepartamento de Ingeniería Mecánica y Metalúrgica, Pontificia Universidad Católica de ChileLaboratorio de Función y Reactividad Vascular, Programa de Fisiopatología, ICBM, Universidad de ChileAbstract The present study involves experiments and modelling aimed at characterizing the passive structural mechanical behavior of the chronic hypoxic lamb thoracic aorta, whose gestation, birth and postnatal period were carried at high altitude (3600 masl). To this end, the mechanical response was studied via tensile and pressurization tests. The tensile and pressurization tests measurements were used simultaneously to calibrate the material parameters of the Gasser–Holzapfel–Ogden (GHO) hyperelasctic anisotropic constitutive model through an analytical-numerical optimization procedure solved with an evolutionary strategy that guarantees a stable response of the model. The model and procedure of calibration adequately adjust to the material behavior in a wide deformation range with an appropriate physical description. The results of this study predict the mechanical response of the lamb thoracic aorta under generalized loading states like those that can occur in physiological conditions and/or in systemic arterial hypertension. Finally, the novel use of the evolutionary strategy, together with the set of experiments and tools used in this study, provide a robust alternative to validate biomechanical characterizations.https://doi.org/10.1038/s41598-021-93267-9 |
| spellingShingle | Eugenio Rivera Claudio Canales Matías Pacheco Claudio García-Herrera Demetrio Macías Diego J. Celentano Emilio A. Herrera Biomechanical characterization of the passive response of the thoracic aorta in chronic hypoxic newborn lambs using an evolutionary strategy Scientific Reports |
| title | Biomechanical characterization of the passive response of the thoracic aorta in chronic hypoxic newborn lambs using an evolutionary strategy |
| title_full | Biomechanical characterization of the passive response of the thoracic aorta in chronic hypoxic newborn lambs using an evolutionary strategy |
| title_fullStr | Biomechanical characterization of the passive response of the thoracic aorta in chronic hypoxic newborn lambs using an evolutionary strategy |
| title_full_unstemmed | Biomechanical characterization of the passive response of the thoracic aorta in chronic hypoxic newborn lambs using an evolutionary strategy |
| title_short | Biomechanical characterization of the passive response of the thoracic aorta in chronic hypoxic newborn lambs using an evolutionary strategy |
| title_sort | biomechanical characterization of the passive response of the thoracic aorta in chronic hypoxic newborn lambs using an evolutionary strategy |
| url | https://doi.org/10.1038/s41598-021-93267-9 |
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