钨纤维增强金属玻璃复合材料的长杆弹斜侵彻/穿甲性能  

Ballistic performance of tungsten fiber-reinforced metallic glass composite in the long rod oblique penetration/perforation

作　　者：章浪 赵丰鹏 张钰忠 邓勇军[1,2] 李继承 ZHANG Lang;ZHAO Fengpeng;ZHANG Yuzhong;DENG Yongjun;LI Jicheng(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;Institute of Systems Engineering,China Academy of Engineering Physics,Mianyang 621999,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 [3]中国工程物理研究院总体工程研究所,四川绵阳621999

出　　处：《爆炸与冲击》2025年第3期105-119,共15页Explosion and Shock Waves

基　　金：四川省自然科学基金杰出青年科学基金(2023NSFSC1913);国家国防科技工业局科研专项项目(KJSP2023020304)。

摘　　要：基于钨纤维和金属玻璃基体的实际分布特性,建立复合材料弹体的细观有限元几何模型,采用修正的热力耦合本构模型来描述金属玻璃基体的高强度和高剪切敏感性,结合相关的斜侵彻/穿甲试验,开展复合材料长杆弹斜侵彻/穿甲钢靶的三维有限元模拟,与钨合金弹进行对比分析,讨论弹靶变形和破坏特征,分析了撞击倾角、撞击速度等因素对复合材料弹体侵彻/穿甲“自锐”行为以及弹道特征的影响。结果表明,在斜侵彻/穿甲条件下,由于弹体头部受力的非对称特征,弹头逐渐锐化为非对称的尖头构型,同时弹道偏转,复合材料弹体的“自锐”性能以及侵彻/穿甲能力下降。撞击速度对斜侵彻/穿甲条件下弹体的“自锐”特征及弹道行为有显著影响,低速撞击条件下,撞击倾角越大,弹体侵彻性能越弱;当倾角增大到50°时,撞击速度小于900m/s的弹体均难以有效侵彻靶板;倾角进一步增大时,弹体容易跳飞。Combined with the actual distribution characteristics of tungsten fibers and metallic glass matrix,a threedimensional(3D)mesoscale finite element(FE)geometric model of a long rod of tungsten fiber-reinforced metallic glass composite was established,and the coupled thermo-mechanical constitutive model was used to describe the high strength and high shear sensitivity of metallic glass matrix.FE simulations on the oblique penetration/perforation of composite and tungsten alloy long rods into steel targets were carried out combined with related oblique penetrating tests,and comparative analyses on the deformation and failure characteristics of projectiles and targets were conducted.Furthermore,the influences of oblique angle and impact velocity on the‘self-sharpening’behavior of composite long rods and the corresponding ballistic performance were investigated in detail.Related analysis shows that in the oblique impact condition,due to the asymmetrical characteristics of target resistance on the rod,the rod nose gradually sharpens into an asymmetrical pointed configuration,and certain deflection occurs in the trajectory.Consequently,the‘self-sharpening’behavior in the composite long rod is weakened to a certain extent,and thus a decay occurs in its penetrating property.Besides,the impact velocity also contributes to the‘selfsharpening’characteristics and the corresponding ballistic behavior in the oblique impact condition,and the decay of penetrating capability derived from the oblique angle is more remarkable at lower impact velocities.When the oblique angle increases to 50°,the composite long rod is hard to effectively penetrate the target at an impact velocity lower than 900 m/s,and ricochet becomes easy when it impacts under a higher oblique angle.The results are of good significance in predicting the penetrating ability of tungsten fiber-reinforced metallic glass matrix composite long rods and optimizing its impact attitude.

关 键 词：钨纤维增强金属玻璃复合材料 斜侵彻 穿甲 自锐 弹道特征 有限元模拟 

分 类 号：O385[理学—流体力学]