CAJ | 학술논문

对高速步枪弹撞击带复合防护人体上躯干冲击响应进行了有限元建模和数值计算分析，以CT扫描获取人体上躯干建模源图像，建立了包括皮肤、肌肉、胸廓骨骼结构、主要内脏器官和纵膈在内的人体上躯干有限元模型；根据步枪弹高速侵彻特点，建立了软硬复合防弹衣有限元模型，利用显式非线性有限元方法对高速步枪弹撞击带软硬复合防护衣的人体上躯干的冲击响应进行数值计算，获得了皮肤、胸骨、心脏、肺脏、肝脏以及胃的动态冲击响应情况。计算结果与实验结果的对比验证了有限元计算模型的正确性，数值计算结果定量揭示了人体上躯干靶标动力响应特性和软硬复合防弹衣后人体钝性损伤时压力传递机制，为冲击效应与损伤评估提供了基本数据，为数值模拟步枪弹高速钝击有软硬复合防护的人体靶标作用效应提供了一种有效方法。
대고속보창탄당격대복합방호인체상구간충격향응진행료유한원건모화수치계산분석，이CT소묘획취인체상구간건모원도상，건립료포괄피부、기육、흉곽골격결구、주요내장기관화종격재내적인체상구간유한원모형；근거보창탄고속침철특점，건립료연경복합방탄의유한원모형，이용현식비선성유한원방법대고속보창탄당격대연경복합방호의적인체상구간적충격향응진행수치계산，획득료피부、흉골、심장、폐장、간장이급위적동태충격향응정황。계산결과여실험결과적대비험증료유한원계산모형적정학성，수치계산결과정량게시료인체상구간파표동력향응특성화연경복합방탄의후인체둔성손상시압력전체궤제，위충격효응여손상평고제공료기본수거，위수치모의보창탄고속둔격유연경복합방호적인체파표작용효응제공료일충유효방법。
To study the mechanism and evaluation of behind composite armor blunt trauma,the mechanical response of high-velocity bullet impacting on human torso was investigated by FEA numerical simulation.A human torso finite element model including thoracic skeletal structure, organs,muscle/skin was developed based on CT scanning images of an adult Chinese man. According to the process of bullet penetrating armor process and armor structure,the finite element model of composite body-armor was set up.The mechanical response of high velocity bullet impacting on human torso outfitted with composite body armor was numerically simulated by the explicit finite element method.The dynamic response of heart,lung,liver stomach,and sternum were obtained.The numerical results are in accordance with experimental results.The model and parameters are validated.The simulation results revealed impact response characteristics of human torso and armor blunt trauma mechanism.The finite element model of human torso behind composite armor with suitable configuration and parameter is available for the simulation of behind armor blunt trauma.