摘要
目的建立符合解剖结构的头颈三维动力学有限元模型,研究冲击力作用下头颈部动力学响应。方法采用中国成年男性志愿者颈部CT扫描图像,获取颈椎三维点云数据,通过有限元前处理软件ICEM-CFD和Hyper Mesh建立颈部有限元模型。模型包括椎骨、椎间盘、小关节、韧带和软骨等组织,结合已建立并验证的头部有限元模型,装配成具有详细解剖结构的人体头颈部有限元模型。结果模型参考公开发表的头颈部轴向冲击实验数据进行验证,其颈部变形、头部加速度、接触力曲线以及损伤部位与实验数据吻合较好。结论动力学三维有限元模型可用于汽车安全、运动学损伤等领域人体头颈部的动态响应和损伤机制研究。
Objective To construct a three-dimensional （3D） dynamic head-neck finite element model which ac- cords with the anatomical structure, and study its dynamic responses under the external force. Methods By using the neck CT images of a Chinese adult male volunteer and obtaining the 3D cervical point cloud data, the finite element model of cervical spine was established using ICEM-CFD and HyperMesh software. This model, including vertebrae, intervertebral discs, facet joints, ligaments and cartilage tissues, and combining with the es- tablished and verified head finite element model, was assembled as human head-neck finite element model with detailed anatomical structures. Results The model was validated by data of head-neck axial impact experiments reported in previously published literature. The simulation results showed that the neck deformation, head accel- eration, head force and injury positions were preferably consistent with the experimental data. Conclusions The established 3D dynamic finite element model can be used to study head-neck dynamic responses and damage mechanism in the fields of traffic safety and impact injuries.
出处
《医用生物力学》
EI
CAS
CSCD
北大核心
2017年第5期393-400,共8页
Journal of Medical Biomechanics
基金
博士后面上项目(2016M592421)
国家自然科学基金项目(51405153)
湖南省科技支撑计划重点项目(2015NK3031)
湖南省重点研发计划(2016GK2077)
湖南省教育厅重点项目(17A068)
关键词
有限元模型
颈部损伤
头部加速度
模型验证
生物力学
Finite element model
Neck injury
Head acceleration
Model validation
Biomechanics
