Study of the Influence of Boundary Conditions on Corneal Deformation Based on the Finite Element Method of a Corneal Biomechanics Model
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Gómez García, Carmelo; Piñero Llorens, David Pablo; Paredes, Manuel; Alió Sanz, Jorge Luciano; Cavas Martínez, FranciscoÁrea de conocimiento
Expresión Gráfica en IngenieríaPatrocinadores
This publication was carried out within the framework of the project “Desarrollo y validación de un nuevo concepto de caracterización biomecánica-morfofuncional de la córnea”, reference number DTS21/00103. This project was funded by the Instituto de Salud Carlos III (ISCIII) and co-funded by the European Union.Fecha de publicación
2024Editorial
MDPICita bibliográfica
Gómez, C.; Piñero, D.P.; Paredes, M.; Alió, J.L.; Cavas, F. Study of the Influence of Boundary Conditions on Corneal Deformation Based on the Finite Element Method of a Corneal Biomechanics Model. Biomimetics 2024, 9, 73. https://doi.org/10.3390/biomimetics9020073Revisión por pares
siPalabras clave
Multizone corneaConstraints influence
Patient-specific models
Computational time
Corneal biomechanic
Resumen
Implementing in silico corneal biomechanical models for surgery applications can be boosted by developing patient-specific finite element models adapted to clinical requirements and optimized to reduce computational times. This research proposes a novel corneal multizone-based finite element model with octants and circumferential zones of clinical interest for material definition. The proposed model was applied to four patient-specific physiological geometries of keratoconus-affected corneas. Free-stress geometries were calculated by two iterative methods, the displacements and prestress methods, and the influence of two boundary conditions: embedded and pivoting. The results showed that the displacements, stress and strain fields differed for the stress-free geometry but were similar and strongly depended on the boundary conditions for the estimated physiological geometry when considering both iterative methods. The comparison between the embedded and pivoting boundary conditions showed ...
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