基于有限元法的人类头部损伤生物力学的模拟分析  

Simulation Based Investigation on Injury Biomechanics of the Human Head by Finite Element Method

作　　者：阮世捷[1] 何培[1] 卢俊鹏[1] 李海岩[1] 李霞[1] 张海钟[2] 

机构地区：[1]天津科技大学生物力学与车辆安全工程中心,天津300022 [2]北京301医院,北京100853

出　　处：《中国生物医学工程学报》2007年第1期99-104,共6页Chinese Journal of Biomedical Engineering

基　　金：国家自然科学基金资助项目(30570481);天津市科委重点基金资助项目(043803811)

摘　　要：根据正常头部螺旋CT扫描影像,通过对CT扫描影像的图像处理,利用计算机辅助工程技术,采用单元网格划分和三维重构技术,开发、建立了三维的人类头部有限元计算模型。应用本模型模拟颅脑在直接碰撞中的生物力学问题。计算模型比较真实地反映了头颅实际碰撞实验中的物理反应,比较忠实地再现了某些实验的结果,如头部撞击合力和脑压力/强等。同时,脑压力/强的分布再次证实了经典的撞击压-对撞压产生理论。本研究的计算模型可为进一步的头部损伤生物力学研究提供一种新的工具。Three-dimensional finite element model of the human head has been developed based on CT scan images from a normal human head. The techniques such as image processing, computer-aided engineering, mesh generation and three-dimensional reconstruction were applied to build the finite element head model. The model was used to simulate direct impacting head. Model responses such as impact force, head acceleration, coup and contrecoup pressures faithfully follow those trends showed in the test. The traditional coup-contrecoup pressure theory was also confirmed with this model simulation. The model developed in this study provides a new tool for further head injury study of biomechanics.

关 键 词：头部直接撞击 颅脑损伤 撞击压 对撞压 有限元 

分 类 号：R318[医药卫生—生物医学工程]