Development and validation of a 6-year-old pedestrian thorax and abdomen finite element model and impact injury analysis

Q4 Engineering

International Journal of Vehicle Safety Pub Date : 2016-01-27 DOI:10.1504/IJVS.2015.074378

Wenle Lv, Shijie Ruan, Haiyan Li, Shihai Cui, Lijuan He

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引用次数: 5

Abstract

A detailed anatomy structure finite element (FE) model of the paediatric thorax and abdomen of a 6-year-old was constructed and validated. The thoracoabdominal geometrical model, extracted from computed tomography (CT) scan images of a 6-year-old child, was divided into finite element models with different types of elements. The validity of the model was verified by reconstructing impact experiments of paediatric cadaver thorax and abdomen and comparing impact force-deformation curves, maximum viscous criterion (VC) values and tissue injuries between simulations and experiments. The simulation results showed that the thoracoabdominal impact force-deformation curves located in the experimental corridors, and the trend of the curves, was well consistent with the experimental corridors. The maximum viscous criterion values in simulations were also located in the range of experimental results. Injuries to ribs and internal organs predicted in simulations were consistent with the autopsy results. Therefore, the model can be used to study the mechanism of child pedestrians' thoracic and abdominal injury in traffic accidents. Language: en

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6岁行人胸腹部有限元模型的建立与验证及碰撞损伤分析

建立了6岁儿童胸腹细部解剖结构有限元模型并进行了验证。从6岁儿童的CT扫描图像中提取胸腹几何模型，将其划分为不同单元类型的有限元模型。通过重建儿童尸体胸腔和腹部的冲击实验，比较模拟与实验的冲击力变形曲线、最大粘性判据(VC)值和组织损伤，验证了模型的有效性。仿真结果表明，胸腹碰撞力-变形曲线位于实验廊道内，其变化趋势与实验廊道吻合较好。模拟的最大粘性判据值也位于实验结果的范围内。模拟预测的肋骨和内脏损伤与尸检结果一致。因此，该模型可用于研究交通事故中儿童行人胸腹损伤的发生机制。语言:在

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来源期刊

International Journal of Vehicle Safety Engineering-Automotive Engineering

CiteScore

0.30

自引率

0.00%

发文量

期刊介绍： The IJVS aims to provide a refereed and authoritative source of information in the field of vehicle safety design, research, and development. It serves applied scientists, engineers, policy makers and safety advocates with a platform to develop, promote, and coordinate the science, technology and practice of vehicle safety. IJVS also seeks to establish channels of communication between industry and academy, industry and government in the field of vehicle safety. IJVS is published quarterly. It covers the subjects of passive and active safety in road traffic as well as traffic related public health issues, from impact biomechanics to vehicle crashworthiness, and from crash avoidance to intelligent highway systems.