基于有限元素法的颅脑碰撞损伤模拟方法  

A Development of Method for The Cranium Brain Front Crash Simulation Based on Finite Element Method

作　　者：张建国[1] 何培[1] 阮世捷[1] 芦俊鹏[1] 李霞 李海岩[1] 

机构地区：[1]天津科技大学机械工程学院,300222

出　　处：《微计算机信息》2006年第12S期219-221,270,共4页Control & Automation

基　　金：国家自然科学基金项目(30470462)

摘　　要：根据人体脑部的螺旋CT扫描图像,利用图形处理,三维重建和有限元网格划分技术,建立了一个基于人体解剖学结构的脑部的三维有限元模型,该模型包括大脑左右半脑、小脑、大脑镰、小脑幕、脑脊液等部分,共26260个节点,30837个单元,模型生物材料特性分别采用弹性和粘弹性模型描述。采用该模型模拟了脑部正碰的过程,得到了碰撞过程的速度、能量、应变和应力曲线。为今后整个头部的三维有限元模型的建立奠定了技术基础,为宇航、交通事故、司法鉴定创伤判断、临床治疗提供可用颅脑有限元模型。This paper presents a human brain 3D finite element model, base on the human brain CT scan image, by the technologies of image processing and meshing, which consisted of left and right brain, cerebellar ,falx cerebri and cerebellum. The model has nodes and elements. With it we simulate a brain front crash process, and get the curves which describe the process＇s speed, energy, strain and stress. This develops a technology foundation of the whole head finite element model. Such knowledge would he helpful in the treatment of injury through identifying the mcehanism of trauma and in protecting the pilot during ejection.

关 键 词：人体颅脑 有限元模型 模拟碰撞 

分 类 号：R318[医药卫生—生物医学工程]