A19 直接衝撃を受ける頭部の有限要素解析と骨折発生クライテリア(頭部のモデル化と計測)

概要

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Fatal head injuries occur under various impact conditions. In case of direct impact, skull fractures in addition to brain injuries may also happen. To predict head injury with skull fracture, finite element simulation was considered to be more effective. However, existing skull fracture criteria in case of direct impact are not based on strain or stress. So, they can not predict local fractures accurately. Furthermore, it is difficult to conduct experiments on animals in order to obtain stress or strain distribution during fracture. In this study, stress-based skull fracture criterion which can reproduce and predict skull fracture due to direct impact was developed based on the existing skull fracture criterion JHTC, using a finite element head model. This study also shows that a finite element simulation using the developed skull fracture criterion was able to represent possibility of skull fracture during direct impact.
2010-11-02