Finite element modelling of 10-year-old child pelvis and lower extremities with growth plates for pedestrian protection

Q4 Engineering

International Journal of Vehicle Safety Pub Date : 2015-07-27 DOI:10.1504/IJVS.2015.070788

M. Shen, F. Zhu, H. Mao, H. Fan, Nikhil Mone, Vikas Sanghavi, A. Kalra, X. Jin, C. Chou, King H. Yang

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引用次数: 13

Abstract

For improved protection for pedestrians in the 10 years (YO) old age group, it is imperative to investigate the injury mechanisms using paediatric finite element (FE) model. A 10 YO child FE pelvis and lower extremities (PLEX) model was developed in this study. The model was validated by comparing simulated results against available paediatric experimental data and scaled adult test results. Growth plates were then embedded into this baseline model at the lower extremities. The anatomical features were kept and the mechanical properties were properly estimated based on literature findings. Subsequently, the effect of the growth plates at knee joint regions was studied in a car-to-pedestrian impact scenario. Results showed that the presence and early fracture of growth plates at knee region could alter the injury pattern at the lower extremities. Failure criterion of tension or shearing assumed in this model could also greatly influence the fracture progress.

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用生长板保护10岁儿童骨盆和下肢的有限元模型

为了更好地保护10岁(YO)年龄组的行人，有必要利用儿科有限元(FE)模型研究损伤机制。本研究建立了一个10岁儿童骨盆和下肢FE (PLEX)模型。通过将模拟结果与现有的儿科实验数据和缩放成人测试结果进行比较，验证了该模型。然后在下肢的基线模型中植入生长板。在保留解剖特征的基础上，根据文献资料对其力学性能进行了适当的估计。随后，在汽车与行人碰撞的情况下，研究了膝关节区域生长板的影响。结果表明，膝关节生长板的存在和早期骨折可改变下肢的损伤模式。该模型假定的拉伸或剪切破坏准则也会对断裂进程产生较大影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.