摘要
为研究防弹头盔在非贯穿侵彻情况下,头盔的瞬态力学响应规律以及对人体头部造成的钝性损伤程度,采用三维数字图像相关技术(3D-digital image correlation, 3D-DIC)开展了试验研究,获得了头盔内部鼓包高度、变形速度和变形区域的面积等数据,并结合钝性准则和简明损伤定级标准对头盔变形可能造成的头部损伤程度进行了评估.试验结果表明,在非贯穿侵彻过程中,瞬时鼓包的最大高度平均值为27.8 mm,静态鼓包高度平均为9.5 mm.头盔与颅骨间的间隙对头部钝击损伤严重程度有显著影响,当间隙为12.7 mm时,平均AIS分值为5,平均颅骨骨折概率为22.3%;当间隙为15 mm时,平均AIS分值为2,平均颅骨骨折概率为3.8%.
In order to study the transient mechanical response of the ballistic helmet in the case of non-penetrating and the severity of behind helmet blunt trauma(BHBT), an experimental study was carried out using 3D-digital image correlation(3D-DIC). The dynamic back face deformation(BFD) of the helmet, the deformation speed and the deformation area during loading were obtained. Based on these results, the blunt criterion(BC) and the abbreviated injury scale(AIS) were adopted to evaluate the degree of BHBT. The results show that the average maximum height of BFD is 27.8 mm, and the average static height of BFD is 9.5 mm. The gap between the helmet and the skull has a significant effect on the severity of BHBT. When the gap is 12.7 mm, the average AIS score is 5, and the average skull fracture probability is 22.3%;when the gap is 15 mm, the average AIS score is2%, and the average skull fracture probability is 3.8%.
作者
温垚珂
李子轩
闫文敏
张俊斌
崔广宇
刘飞
WEN Yaoke;LI Zixuan;YAN Wenmin;ZHANG Junbin;CUI Guangyu;LIU Fei(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing,Jiangsu 210094,China;Science and Technology on Transient Impact Laboratory,Beijing 102202,China;No.208 Research Institute of China Ordnance Industries,Beijing 102202,China;The No.63856 Troop of PLA,Baicheng,Jilin 137001,China)
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2022年第5期463-470,共8页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金资助项目(11872215)
国家部委科工局稳定支持经费资助项目(JCKYS201909C001)
国家部委基础加强计划技术领域基金资助项目(2020-JCJQ-JJ-403
2019-JCJQ-JJ-373)。
关键词
头盔防护后钝性损伤
防弹头盔
三维数字图像相关技术
钝性准则
简明等级损伤准则
behind helmet blunt trauma(BHBT)
ballistic helmet
3D-digital image correlation(3D-DIC)
blunt criterion
abbreviated injury scale(AIS)
