中文摘要：

鉴于对儿童损伤准则和容忍极限的研究缺乏,本文中参考仅有的两项儿童胸部动态实验数据,通过对比仿真与实验中获得的儿童胸部力-变形曲线,对作者先前建立的10岁儿童胸部有限元模型的动力学响应进行了验证,并分析了由模型计算获得的应力-应变和实验中观察到的骨骼与内脏损伤之间的关系。结果表明,仿真获得的胸部力-变形曲线与实验吻合较好,应变失效准则能有效地预测骨骼和内脏的损伤情况。成人胸部压缩量损伤准则和黏性损伤准则可用于儿童胸部损伤的预测,但儿童损伤容忍极限值低于成人。

英文摘要：

In this paper,in view of the inadequate research on child injury criteria and tolerance limits,the data of two unique dynamic experiments available on pediatric thoracic injury are taken as references,and by comparing the deflection-force curves of child thorax obtained from simulation with that by experiments,the dynamics response of finite element model for 10 year old child thorax previously built by authors is verified,and the relationships between the stress-strain calculated with the model and the injuries of bones and viscera observed in experiments are analyzed.The results demonstrate that the deflection-force curves of child thorax obtained by simulation well agree with that by experiments and the strain failure criteria can effectively predict the injuries of bones and viscera.The thoracic compression criteria and viscous criteria for adult can be used to predict the injury of child thorax,however,the injury tolerance limits of child are lower than that of adult.