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Modélisation en éléments finis à géométrie paramétrée de la tête : application à l’étude des commotions cérébrales

Abstract : Although the brain concussion is a common injury of the head in contact sport, its physiopathology still remains studied, especially regarding the conditions of formation. The finite element approach is very useful to locally quantify the mechanical state of the studied structures. If the injury mechanisms of the brain concussion is directly correlated to the conditions of the mechanical load, the morphological variability of the head has never been assessed. The goal of this survey is to improve the knowledge of the injury mechanisms designing a geometrical parametrized finite element model of the head and the principal components it contains [Brain, cerebellum, brain stem, falx cerebri and tentorium cerebelli, ventricles and the main sinus], which could be subject-specific. Once the morphological variability of these structures was quantifyed, an automatic method to generate the mesh of the model was developed. The parametrization can be adapted to specific anatomy extracted from medical imaging. Finally, a preliminary study was performed to investigate the influence of the morphology on the biomechanical response of the head, in the case of referenced impacts.
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Submitted on : Thursday, April 28, 2022 - 5:53:57 PM
Last modification on : Friday, August 5, 2022 - 2:54:01 PM
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  • HAL Id : tel-03654715, version 1

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Pierre-Marc François. Modélisation en éléments finis à géométrie paramétrée de la tête : application à l’étude des commotions cérébrales. Sciences de l'ingénieur [physics]. Arts et Métiers, 2019. Français. ⟨NNT : 2019ENAM0066⟩. ⟨tel-03654715⟩

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