摘要
目的预测与评估汽车碰撞中小身材女性胸腹部的生物力学响应及损伤机制。方法基于国人第5百分位女性志愿者CT图像,提取精确的胸腹部几何轮廓,借助相关软件构建具有详实解剖学结构的国人第5百分位女性胸腹部有限元模型,并重构3组胸腹部尸体实验,即胸部正面撞锤冲击实验、腹部正面棒击实验和胸腹部侧面撞锤冲击实验,对模型进行有效性验证。结果仿真实验所得接触力-变形量曲线及胸腹部组织器官损伤生物力学响应与尸体实验结果吻合,验证了模型的有效性。结论该模型可用于小身材女性胸腹部损伤机制的研究,也能应用于小身材女性乘员约束系统的研发及司法鉴定案例分析,并为开发中国体征第5百分位女性整人有限元模型奠定基础。
Objective To predict and assess biomechanical responses and injury mechanisms of the thorax and abdomen for small-sized females in vehicle collisions.Methods The accurate geometric model of the thorax and abdomen was constructed based on CT images of Chinese 5;percentile female volunteers.A thoracic-abdominal finite element model of Chinese 5;percentile female with detailed anatomical structure was developed by using the corresponding software.The model was validated by reconstructing three groups of cadaver experiments(namely,test of blunt anteroposterior impact on the thorax,test of bar anteroposterior impact on the abdomen,test of blunt lateral impact on the chest and abdomen).Results The force-deformation curves and injury biomechanical responses of the organs from the simulations were consistent with the cadaver experiment results,which validated effectiveness of the model.Conclusions The model can be used for studying injury mechanisms of the thorax and abdomen for small-sized female,as well as developing small-sized occupant restraint systems and analyzing the forensic cases,which lays foundation for developing the whole body finite element model of Chinese 5;percentile female.
作者
李海岩
孙孝海
贺丽娟
冉令华
吕文乐
崔世海
阮世捷
LI Haiyan;SUN Xiaohai;HE Lijuan;RAN Linghua;LÜWenle;CUI Shihai;RUAN Shijie(International Research Association on Emerging Automotive Safety Technology,Tianjin University of Science and Technology,Tianjin 300222,China;China National Institute of Standardization,Beijing 100191,China)
出处
《医用生物力学》
CAS
CSCD
北大核心
2022年第1期91-97,共7页
Journal of Medical Biomechanics
基金
国家重点研发计划(2018YFC0807203)
国家自然科学基金项目(81371360,81471274)。
关键词
国人第5百分位女性
胸腹部
损伤机制
生物力学响应
Chinese 5th percentile female
thorax and abdomen
injury mechanism
biomechanical response
