自动生成颅脑冲击响应的图像三维有限元分析

本文用三维有限元方法分析颅脑在气流冲击载荷作用下非线性动力学响应问题，用核磁共振颅脑断层图像输入计算机，采用 Ｃ Ｔ 图像三维再现软件和非规则形体、有限元网格划分软件进行计算，结果得到人体头部冲击波传递、颅脑损伤容限曲线、延髓损伤等，为宇航、交通事故、司法鉴定创伤判断、临床治疗提供科学依据．

An Analysis of 3-D FEM for Skull-brain Response to Pact Drown on Automatic Formulated Picture

In the present study of human skull brain injury, the authors used a 3 D finite element model (FEM) to define the geometrical and dynamic characteristics of the human head under high speed air force ejection. A 3 D FEM model from serial CT sections has been developed in this study. The skull brain geometry from MRI picture were used in the construction of the model. Research is currently being and conducted by AISA to develop a comprehensive FEM representation of the entire head and neck capable of simulation the role of skull deformation, under stresses waves in the skull and brain. The result reported here show the head injury criterion tolerance curve injury criteria based on head angular acceleration and angular velocity have been proposed for long duration, indirect impact situations. The comparison between the theoretically calculated results and the experimental results shown no difference. Such knowledge would be helpful in the treatment of injury through identifying the mechanism of trauma and in protecting the pilot during ejection.