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The characterization of intracranial aneurysms biomechanics is of key importance in the understanding and prevention of stroke and particularly of subarachnoid hemmorage, a non negligible cause of disability or death in adults. We work in the development of models that allow us to study the biomechanical response of the artery and the aneurysm to applied loads, both external and those characteristic of the physiology of the cardiac cycle.
Thin shells models
In recent works, we studied the effects of localized loads in the neighboring areas of the aneurysm neck. We described the deformation kinematics using a geometrically nonlinear thin shell model under Kirchhoff-Love's assumptions in conjunction with a Saint-Venant's hyperelastic material model. Also, we considered a larger thickness in the artery relative to the aneurysm dome, as well as different Young’s modulus in both regions to mimic the nonuniformity of the real problem.
Publications
Muzi, N., Camussoni, F., Moyano, L. G., & Millán, D. (2022). Characterizing the biomechanics of an endovascular intervention in cerebral aneurysms using Kirchhoff–Love shells of nonuniform thickness. In International Conference on Medical Image Computing and Computer-Assisted Intervention (pp. 39-52). Springer, Cham. https://doi.org/10.1007/978-3-031-09327-2_3
Muzi, N., Camussoni, F., Moyano, L. G., & Millán, D. (2021). Mesh construction and computational analysis of the biomechanics of an endovascular intervention in cerebral aneurysms using Kirchhoff--Love shells. In Proceedings of XLII Ibero Latin American Congress on Computational Methods in Engineering; III Pan-American Congress on Computational Mechanics. Associação Brasileira de Métodos Computacionais em Engenharia. https://cilamce.com.br/anais/arearestrita/apresentacoes/254/9949.pdf
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