法医学杂志2026，Vol.42Issue(1)：1-7,7.DOI:10.12116/j.issn.1004-5619.2024.440510
基于有限元仿真的颅脑摔跌伤成伤机制分析
Analysis of the Injury Mechanism of Traumatic Craniocerebral Injury from Falls Based on Finite Element Simulation
摘要
Abstract
Objective To use finite element methods to conduct a digital simulation of a craniocerebral injury death case in which the manner of injury was questionable.Based on biomechanical data,the injury mechanism of the deceased's brain injury was quantitatively analyzed to provide a quantitative and visual objective basis for determining the manner of injury.Methods The THUMS 4.02 human fi-nite element model was used to simulate the process of skull and brain tissue injury when the occipital re-gion fell and struck flat ground,with impact velocities of 4.18,5.00,5.50 and 6.00 m/s.Combined with the actual autopsy results,the injury mechanism was analyzed based on injury patterns and tissue stress characteristics.Results When the human body fell freely without external force(4.18 m/s)and landed on the occipital region,it caused minor fractures of the occipital bone and mild brain tissue injury;when the body was pushed to the ground by external forces(5.00,5.50 and 6.00 m/s),the fracture range of the skull extended to the skull base,causing moderate brain tissue injury.Based on the actual injury findings,the possibility that the deceased fell freely can be ruled out.Conclusion Reconstructing the process of traumatic brain injury using the finite element method can provide new ideas for deter-mining the mechanism of injury in complex forensic cases through biomechanical indicators.关键词
法医病理学/有限元法/生物力学/颅脑损伤/成伤机制Key words
forensic pathology/finite element method/biomechanics/craniocerebral injury/injury mechanism分类
医药卫生引用本文复制引用
杨杰,胡毅磊,王金明,李正东..基于有限元仿真的颅脑摔跌伤成伤机制分析[J].法医学杂志,2026,42(1):1-7,7.基金项目
上海市教育发展基金会和上海市教育委员会"曙光计划"资助项目(21SG58) （21SG58）
上海市2023年度"科技创新行动计划"启明星培育资助项目(23YF1448700) （23YF1448700）
上海市法医学重点实验室资助项目(21DZ2270800) （21DZ2270800）
