Contribution à l’évaluation objective du confort en posture assise par le développement d’un modèle biomécanique paramétrable du tronc

Abstract : The comfort of motor vehicles is a strategic and economic element in their developments. One of the future challenges is the individual comfort, which can only be achieved with original digital models. Indeed, we should be able to take into account the diversity of anthropometric occupants in the worldwide. In this context, Faurecia, automotive seating manufacturer and leader in this field, wishes to optimize its design process through digital tools to analyze comfort in the early design steps. However, at present, no digital tool is available to validate the comfort of the backrest. The purpose of this study is to develop a numerical assessment tool for the comfort of the backrest design taking into account individual differences. This tool is based on the development of a biomechanical trunk model. Firstly, a test campaign allowed identifying the sitting reproducibility of a volunteer in a standardized position (position, pressure distribution). A parametric finite element model of the trunk was developed and will allow simulating these experimental conditions. The model was validated from a geometrical point of view and the mesh was analyzed. To fully validate the model and allow its use by OEMs, sitting positions which the spine curvature is known will be simulated. Then the model will be evaluated for the comfort analysis by comparison of the pressure maps to the human/seat interface.
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Rivka Toubiana Meyer. Contribution à l’évaluation objective du confort en posture assise par le développement d’un modèle biomécanique paramétrable du tronc. Biomécanique [physics.med-ph]. Ecole nationale supérieure d'arts et métiers - ENSAM, 2016. Français. ⟨NNT : 2016ENAM0016⟩. ⟨tel-01513728⟩

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