对头部损伤判断准则适用性和可用性的新探索

A New Exploration of the Applicability of the Head Injury Criterion

头部损伤判断准则(Headinjury criterion,HIC)是目前较为广泛被接受的、用来衡量头部在外来载荷下安全性的一种损伤判断准则。它被应用于各国的汽车安全法规中,也是头部损伤防护装置(如头盔)设计的参考标准。然而对它的适用性和可用性也存在着不少的争议。本研究应用人类头部有限元的计算模型,通过分析两个不同大小、不同质量的头部模型在三种不同载荷下所产生的脑组织的应力和相应引出的"头部损伤判断准则"的计算值,识别影响"头部损伤判断准则"的适用性和可用性的因素,为如何更科学地评判头部受载安全性提供新的见解和结论。

Head injury criterion （HIC） is a widely accepted injury criterion in assessing the injury potential of the human head under external loads. It has been used in vehicle safety regulations worldwide and helmet design. However, controversy about its applicability exists. In this study, two human head models of different size and mass were created to explore the applicability of HIC. Under three different impact loadings, the principal stresses of the two brains of the two different head models were calculated and compared with the corresponding HIC values. The influences on the application of HIC in head injury assessment were investigated. This study provides some new insights and leads new conclusions towards human head injury assessment.