Abstract
Wearing child restraint system (CRS) for children under 6 is obligated by law since 2000 in Japan. A CRS has great influence in crash-safety of children. Therefore, much further improvement of the safety of CRS is requested. In this study, the effects of CRS shapes and material properties for crash-safety of children were clarified using crash simulations with child models and a CRS model. In addition, a CRS optimization to minimize injury risks of head and neck in both frontal and side crashes was carried out. As the result, we proposed a safer CRS for children. Dummy models (Hybrid III 3-year-old dummy model and Q3 dummy model), and a 3-year-old finite element child human model, developed by scaling an adult FE human model, were used in the study.
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