日本人の形態に基づいた頭部有限要素モデルの構築と衝撃シミュレーション

抄録

The influence of the head shape on intracranial responses under impact was investigated by using Finite Element Method. Head shape models of 52 young adult male Japanese were analyzed by Multi Dimensional Scaling (MDS), and a 2 dimensional distribution map of head shapes was obtained. Four finite element models of the Japanese head were constructed by transformed finite element model of average American adult male (H-Head model) using Free Form Deformation technique. The constructed models represent 5%ile and 95%ile of the first 2 scales obtained by MDS. The same acceleration pulse was applied to H-Head model and the 4 finite element models. The cause of the difference was considered to be differences in pressure distribution in the brain caused by the differences in the head shape. Variation in the head shape should be taken into account in simulating the effects of impact using a finite element model.