Abstract
Diffused Axonal Injury is a type of head injury which occurs frequently in traffic accidents. It is said that it is caused by rotational head movement, and elucidation of the mechanism is necessary. There are three factors affecting the occurrence of DAI based on the intracranial structure; A complicated brain and skull structure, relative motion of the brain and skull with cerebrospinal fluid present?, and the restraint of the brain motion due to cerebral flax and tentorium cerebelli. Although various studies are done based on these three factors, it is difficult to reproduce in solid-model and simulation model, and while the influence of three factors in computational dynamics has been unknown, the simplification of the model is performed in the simulation. In this study, constructed the head neck solid-models which the intracranial structure factors differ, and considered the influence of an intracranial structure factors. The experiment which imitated the collision from the side was conducted on three sorts of the head neck solid-models, and brain depths distortion was measured. It turned out that the experimental result of three sorts of head neck substance models is compared, and it has influence with relative motion important for brain depths distortion between a brain slot and a brain-skull.
