Construction of the Head Finite Element Model and Craniocerebral Injury in Facial Collision Accident
Construction of the Head Finite Element Model and Craniocerebral Injury in Facial Collision Accident
复制标题
面部碰撞事故中头部有限元模型的构建与颅脑损伤
DOI：
10.5755/j01.mech.25.3.22371
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Qun Wang
中科院分区：
文献类型：
--
作者：
Qun Wang
这项工作旨在预测和评估碰撞事故中面部撞击对头部损伤的生物力学反应。结合CT/MRI医学成像技术，建立了详细颅面结构的第50百分位头颅生物力学模型。然后利用Nahum和Trosseille的经典实验数据验证了模型的有效性。该模型由327,536个节点和1,337,903个单元组成，具有良好的生物逼真度。本文通过对9个典型的面部交通事故案例的分析，研究了应力波在颅骨中的传播路径，得到了颅脑、von Mose应力和剪应力的分布。事实证明，面部结构可以吸收大量的撞击能量来保护大脑。应力波在颅脑中的传播路径和分布决定了颅脑撞击伤的发生机制，为面部撞击伤的诊断、治疗和防护提供了理论依据。
This work aims at predicting and evaluating the biomechanical response of the facial impact on head injury in a crash accident. With the combination of CT/MRI medical imaging technique, the 50th percentile head biomechanical model with detailed cranio-facial structure is established. After which the validity of the model based on the classical experimental data from Nahum and Trosseille is verified. The model consists of 327,536 nodes and 1,337,903 units, and it has good biological fidelity. Based on the analysis of nine typical cases of facial traffic accidents, this work studies the propagation path of stress wave in the skull, then brain, von Mises stress and shear stress distribution are achieved. It is proved that facial structure can absorb a large amount of impact energy to protect the brain. The propagation path and distribution of stress wave in the skull and brain determine the mechanism of brain impact injury, which provides a theoretic basis for the diagnosis, treatment and protection of craniocerebral injury caused by facial impact.