UHMWPE薄板抗轻武器杀伤元斜侵彻研究  

Study on resistance of UHMWPE thin panels to oblique penetration of small arms ammo

作　　者：宋福琛 郭辉[1,2] 陈玉 SONG Fuchen;GUO Hui;CHEN Yu(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China;Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province,Mianyang 621010,Sichuan,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010 [2]工程材料与结构冲击振动四川省重点实验室,四川绵阳621010

出　　处：《爆炸与冲击》2024年第11期112-127,共16页Explosion and Shock Waves

基　　金：国家自然科学基金(12272330)。

摘　　要：为解决高性能轻质防弹插板受轻武器杀伤元侵彻防护问题,对超高分子量聚乙烯(ultra-high molecular weight polyethylene,UHMWPE)层压薄板进行了侵彻实验,分析了侵彻后UHMWPE薄板的变形失效特征并对比了轻武器杀伤元的破坏形貌。利用有限元软件LS-DYNA建立了UHMWPE薄板抗轻武器杀伤元侵彻数值模型,通过靶板破坏形态、凹陷深度以及弹头变形的实验结果对数值模型的有效性进行了验证。在此基础上,通过数值模拟方法研究了UHMWPE薄板受弹体斜侵彻失效模式,揭示了3种轻武器杀伤元侵彻下入射角度对跳弹现象和UHMWPE薄板破坏形态的影响规律。结果表明:7.62 mm×25 mm的钢芯弹和7.62 mm×39 mm的普通弹(钢芯)斜侵彻UHMWPE薄板的跳弹角均位于45°~50°范围内;7.62 mm×25 mm的铅芯弹在入射角大于70°时才可完整跳出,其余均以破损弹片形式飞溅,弹体破坏会对跳弹状况产生影响;入射角较小时,斜侵彻子弹会产生面积较大且具有一定深度的弹坑,连续击发的下一枚子弹会更容易击穿弹坑薄弱处的纤维板,斜侵彻作用对薄板受二次侵彻产生不利影响;入射角较大时,子弹会较完整地发生跳弹并具有高剩余速度,会对人员产生二次杀伤。研究成果可为UHMWPE薄板用于轻量化军用防弹插板设计提供参考。In order to solve the problem of high-performance lightweight bulletproof inserts protection of penetration of light weapon killing elements,this paper carried out penetration experiments on ultra-high molecular weight polyethylene(UHMWPE)laminated sheet,analyzed the deformation and failure characteristics of the UHMWPE sheet after penetration and compared the damage morphology of light weapon killing element.A numerical model of UHMWPE laminate against the penetration of light weapon killers was established by using the finite element software LS-DYNA,and the validity of the numerical model was verified by the experimental results of the damage morphology of the target plate,the depth of the depression and the deformation of the warhead.On this basis,the failure mode of the UHMWPE thin plate subjected to oblique penetration by the projectile is investigated by numerical methods,and the influence of the incidence angle on the ricochet phenomenon and the damage morphology of UHMWPE thin plate under the penetration of three kinds of light weapon killing elements is revealed.The results show that the ricochet angles of 7.62 mm×25 mm steel-core bullets and 7.62 mm×39 mm ordinary bullets(steel-core)obliquely penetrating UHMWPE plates are located in the range of 45°–50°;7.62 mm×25 mm lead-core bullets can be completely ricocheted out when the angle of incidence is greater than 70°,and the rest of the bullets are in the form of broken shrapnel splinters,and the destruction of the bullet body has an effect on the ricochet condition;the oblique penetration bullets produce a large area and a large number of damage patterns at a smaller angle of incidence;the oblique penetration bullets produce a larger area and a larger number of damage patterns in the UHMWPE plates.When the angle of incidence is small,the oblique penetration bullet will produce a larger area and a certain depth of the crater,the next bullet will be easier to penetrate the crater weakness of the fiber plate,and the oblique penetration effect on the

关 键 词：UHMWPE薄板 轻武器杀伤元 斜侵彻 失效模式 跳弹角 

分 类 号：O389[理学—流体力学]