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Theses

Contribution à la modélisation géométrique et mécanique du tronc de l'enfant

Abstract : Despite of the use of homologated Child Restraint Systems, 2,321 children were killed on European roads in 2007. This social and economical major issue is explained by the lack of biomechanical knowledge on injury mechanisms and associated physical parameters, specifically for children. The present project was supported by the GDR “Biomécanique des chocs“ (CNRS/INRETS/GIE PSA Renault) and funded by the French National Research Agency. The aim of this study is to improve the biomechanical knowledge of the children trunk. The dynamic response of the trunk is essential because it is the main segment used for the whole body restraint when a car crash occurs. In order to improve the reliability of children's models, subject-specific inertial parameters of the body segments were calculated using 3D reconstructions from low dose biplanar X-rays. The fine description of the ribs, costal cartilage and sternum was performed on 3D models from CT-scan. The 3D geometry of the intra-abdominal child organs (kidney, spleen and liver) was defined by measurements based upon 3D modeling using abdominal CT-scan. The quantification of the thoracic and abdominal behaviors was obtained in observing in vivo trunk manipulations carried out within the framework of usual physiotherapist treatments. This research will be used to improve or develop the trunk bio-fidelity of child models and constitute a first step toward an enhanced knowledge of the child biomechanics based directly on in vivo experimentation.
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https://pastel.archives-ouvertes.fr/pastel-00005796
Contributor : Ecole Arts Et Métiers Paristech <>
Submitted on : Tuesday, February 16, 2010 - 8:00:00 AM
Last modification on : Friday, October 23, 2020 - 4:38:33 PM
Long-term archiving on: : Friday, September 10, 2010 - 2:56:13 PM

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  • HAL Id : pastel-00005796, version 1

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Baptiste Sandoz. Contribution à la modélisation géométrique et mécanique du tronc de l'enfant. Sciences de l'ingénieur [physics]. Arts et Métiers ParisTech, 2010. Français. ⟨NNT : 2010ENAM0004⟩. ⟨pastel-00005796⟩

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