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Méthode d'évaluation des systèmes de retenue des enfants dans un environnement automobile

Abstract : Following changes in Child Restraint System (CRS) regulation in July 2013, an experimental CRS evaluation campaign has been conducted. Then, it has been noticed that the situation amongst the youngest involved in side impact was particularly critical. An original methodology has been therefore developed in order to define the “best” energy absorption materials to use in child seats for head, shoulder and pelvis areas. A parametric study in which the restraint of each body segments was independently piloted has then been conducted. The aim was to minimize either regulatory criteria of Q0 and Q1 dummies, or biomechanical criteria based on Q0-6WOC hybrid model. Those recommendations have thereafter been applied to improve an existing child restraint system under side impact. First, it has been checked that resultant linear acceleration of the head and HPC criteria were below regulation limits. Second, Finite Element (FE) model of the optimized car seat has been created and validated in several dynamical steps. Third, both reference child restraint system and optimized child seat has been evaluated in side impact with Q0-6WOC hybrid model. Finally, it has been showed that technical changes helped to cut in half the biomechanical results.
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  • HAL Id : tel-02918152, version 1

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Bérenger Le Tellier. Méthode d'évaluation des systèmes de retenue des enfants dans un environnement automobile. Biomécanique [physics.med-ph]. Université de Strasbourg, 2017. Français. ⟨NNT : 2017STRAD010⟩. ⟨tel-02918152⟩

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