摘要
应用基于CT数据构建的3岁儿童头部有限元模型,参照成人尸体实验条件进行头部撞击仿真实验,并将头部颅内响应结果同尸体实验以及6岁儿童头部进行了对比分析.结果表明:颅骨刚度的增加会引起撞击侧颅内压力减小、对撞侧颅内压力增大、脑组织von Mises应力减小以及脑组织最大剪应力减小,说明在同一冲击载荷条件下,颅骨刚度的增加会使撞击侧的脑组织挫伤风险降低.根据研究结果,建议针对不同年龄段人群制定不同的脑损伤准则.
Head impact simulation experiments were carried out by using the 3-year-old child head FE model based on CT data according to adult cadaver head impact experiment.The simulation results of intracranial responses were compared with those of the real cadaver experiments and 6-year-old child simulation experiments.The results showed that the increase of skull stiffness would result in the decrease of coup pressure,von Mises stress and the maximum shear stress of brain tissues, and the skull with less stiffness has a greater contrecoup pressure.Therefore,under the same impact conditions,theincrease of skull stiffness would result in the decrease of the risk of brain contusion.This investigation suggests that the head injury criteria should be different for people of different age.
出处
《天津科技大学学报》
CAS
北大核心
2016年第3期60-64,共5页
Journal of Tianjin University of Science & Technology
基金
国家自然科学基金资助项目(81201015
81471274
81371360)
关键词
儿童头部有限元模型
头部撞击
颅骨刚度
颅内响应
finite element model of child head
head impact
skull stiffness
intracranial responses
