Forensic Science Evaluation of Fracture Analysis using FEM Analysis
Forensic Science Evaluation of Fracture Analysis using FEM Analysis
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使用 FEM 分析对断裂分析进行法医科学评估
DOI：
10.11395/jjsem.18.278
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
松原知貴，伊藤安海，福岡達也，山田隆一，鍵山善之，根本哲也
中科院分区：
文献类型：
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作者：
Kubota;H;J. Matsumoto;M. Zaiki;M. Ishii;R. Kumazawa;H. Fudeyasu;T. Mikami;J.-I. Hamada;T. Inoue;S. Kobayashi;H. Yamamoto;and I. Akasaka;松原知貴，伊藤安海，福岡達也，山田隆一，鍵山善之，根本哲也
本文提出了一种新的法医学评估方法，它使用有限元分析和落锤试验，以评估人体的伤害钝性武器。在日本，在判断虐待儿童和确认罪行的真实性时，需要通过科学调查获得知识，以便进行客观和定量的评估。然而，对于日本的非专业法官制度，尚未进行考虑到个体之间差异的高度准确的调查，并且尚未建立基于易于理解的标准的评价，这被认为是一个问题。因此，本研究设计了两个新的实验：一个是用测力仪测量新生猪尾巴的断裂载荷，另一个是模拟真实的实验对断裂载荷进行有限元分析。根据这两个实验的结果，我们以高精度估计了婴儿头骨的断裂载荷。我们在有限元分析中研究了载荷面积为100-1000 mm 2的断裂行为，并得出结论，通过与通过掉落婴儿体重30%的重量获得的载荷进行比较，获得的断裂载荷对应于超过1.2 m的坠落高度。
In this paper, we propose a novel evaluation method for forensic science, which uses FEM analysis and a drop-weight test, in order to evaluate the human body damage by blunt weapons. In judging child abuse and confirming the authenticity of its guilt, knowledge by scientific investigation is required for objective and quantitative evaluation in Japan. However, it is considered to be a problem that highly accurate investigations, which considers the differences among individuals, have not been performed and the evaluation based on easy-to-understand criteria have not been established for the Japanese lay judge system. Therefore, in this study, we designed new experiments: one was fracture load measurement of newborn porcine tails with a force tester and the other was FEM analysis of the fracture load which simulated the real experiments. As the results of both experiments, we estimated the fracture load of an infant's skull with high accuracy. We investigated the fracture behavior in the FEM analysis with a load area of 100-1000 mm2 and concluded that the obtained fracture load corresponds to fall height of more than 1.2 m by comparing with the load which was obtained by dropping a weight of 30% of the infant weight.