SiC/UHMWPE防弹插板在步枪弹侵彻下的动态响应研究  

A study on the dynamic response of the rifle bullet penetration into a SiC/UHMWPE ballistic plate

作　　者：刘东旭 温垚珂[1] 董方栋 覃彬 夏海龙 罗小豪 LIU Dongxu;WEN Yaoke;DONG Fangdong;QIN Bin;XIA Hailong;LUO Xiaohao(Nanjing University of Science and Technology,Nanjing 210094,China;Science and Technology on Transient Impact Laboratory,Beijing 102202,China;No.208 Research Institute of China Ordnance Industries,Beijing 102202,China;Cartridge Development Center Chongqing Changjiang Electrician Industry Group Co.,Ltd.,Chongqing 401336,China)

机构地区：[1]南京理工大学机械工程学院,南京210094 [2]瞬态冲击技术重点实验室,北京102202 [3]中国兵器工业第208研究所,北京102202 [4]重庆长江电工工业集团有限公司枪弹开发中心,重庆401336

出　　处：《振动与冲击》2023年第12期264-273,共10页Journal of Vibration and Shock

基　　金：国家自然科学基金(11872215);国防基础科研项目(JCKYS201909C001);军委科技委基础加强计划技术领域基金(2020-JCJQ-JJ-403,2019-JCJQ-JJ-373)。

摘　　要：对防弹插板在高速冲击下的动态力学响应进行研究,不仅可为新型单兵防弹护装备研发提供指导,也可为高性能穿甲枪弹设计提供参考。首先建立了5.56 mm SS109步枪弹侵彻NIJⅢ级SiC/UHMWPE防弹插板的数值模型,采用JHB(Johnson-Holmquist-Beissel)本构和基于ABAQUS较件二次开发的VUMAT本构分别模拟SiC陶瓷和UHMWPE层合板,通过与基于3D-DIC的防弹插板试验结果对比验证了数值模型的准确性,获得了防弹插板背面变形(back face deformation,BFD)的动态响应过程,并开展了弹丸斜侵彻防弹插板的研究。仿真结果表明:弹丸在侵彻防弹插板40μs后速度从810m/s衰减至218 m/s,防弹插板与弹丸接触的陶瓷块严重碎裂;弹丸仅穿透了两层UHMWPE等效层,UHMWPE层合板弹着点区域产生纤维和基体损伤及分层,到700μs时BFD达到最大,为18.72 mm;防弹插板背面剪应变以弹着点为中心呈“L形”分布,UHMWPE层合板等效应力场呈“菱形”分布,且中间层等效应力水平最高。当弹丸以30°和45°角入射时,防弹插板的BFD峰值分别为11.59 mm和6.84 mm,比垂直入射时分别减小38.09%和64.46%。The study of the dynamic mechanical response of ballistic plates under high-speed impact can guide the development of new personal protective,and provide a reference for the design of high-performance armor-piercing bullets.In this paper,the numerical model of the 5.56 mm SS109 rifle bullet impacting an NIJⅢSiC/UHMWPE ballistic plate was established.SiC ceramics and UHMWPE laminates were simulated by JHB(Johnson-Holmquist-Beissel)constitutive and VUMAT based on ABAQUS,respectively.And the accuracy of the numerical model was verified by comparing it with the results of the ballistic plate test by 3D-DIC technology.The dynamic response process of the back face deformation(BFD)of the ballistic plate was obtained.The bullet oblique impact of ballistic plates was also studied.The velocity of the bullet decreases from 810 m/s to 218 m/s after 40μs of penetration into the ballistic plate.The ceramic in contact with the bullet in the ballistic plate was seriously broken,the bullet penetrated only two UHMWPE equivalent layers.And the fiber and matrix damage and delamination occur in the impact area of the UHMWPE laminated plate.BFD reaches a maximum of 18.72 mm at 700μs.The shear strain on the back of the ballistic plate was distributed in“L-shape”on the center point of impact,and the equivalent stress field of the UHMWPE laminate was distributed in“diamond shape”,and the equivalent stress level of the middle layer was the highest.When the bullet impacted at 30°and 45°angles,the peak values of BFD of the ballistic plate were 11.59 mm and 6.84 mm,respectively,which were 38.09%and 64.46%lower than that of the vertical incident,respectively.

关 键 词：冲击动力学 防弹插板 超高分子量聚乙烯 步枪弹 3D-DIC 

分 类 号：TJ012.4[兵器科学与技术—兵器发射理论与技术]