着角与攻角联合作用下薄芳纶层合板抗平头弹侵彻性能  

Synergistic Effects of Impact and Attack Angles on Anti-Penetration Performances of Thin Aramid Laminates

作　　者：季海波 王昕[3] 苏金波 李振 王鹏飞 巨圆圆 卢天健 JI Haibo;WANG Xin;SU Jinbo;LI Zhen;WANG Pengfei;JU Yuanyuan;LU Tianjian(State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,P.R.China;MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,P.R.China;Advanced Materials and Energy Center,China Academy of Aerospace Science and Innovation,Beijing 100176,P.R.China;CSSC Huangpu Wenchong Shipbuilding Co.,Ltd.,Guangzhou 510715,P.R.China;Naval Research Academy,Beijing 100161,P.R.China)

机构地区：[1]南京航空航天大学机械结构力学及控制国家重点实验室,南京210016 [2]南京航空航天大学多功能轻量化材料与结构工信部重点实验室,南京210016 [3]中国航天科技创新研究院先进材料与能源研究中心,北京100176 [4]中船黄埔文冲船舶有限公司,广州510715 [5]海军研究院,北京100161

出　　处：《应用数学和力学》2024年第2期184-196,共13页Applied Mathematics and Mechanics

基　　金：国家自然科学基金(11972185;12032010);国家重点实验室开发基金(MCMS-I-0222K01)。

摘　　要：为探究着角和攻角对薄芳纶层合板抗平头弹侵彻性能的影响,建立了三维有限元仿真模型,对4 mm厚芳纶层合板在着角单独作用下以及着/攻角联合作用下的弹道行为进行了计算.通过弹丸的剩余速度、靶板的极限弹道速度及穿孔能量阈值反映了芳纶层合板的抗侵彻性能,分析了其在不同工况下的变形与破坏机理.结果表明:薄芳纶层合板的弹道极限速度随初始着角的增加先减小后增大;随着入射速度的增大和初始着角的减小,着角改变量和攻角改变量均有减小的趋势;对于固定的着角,负攻角不利于子弹侵彻,正攻角有利于侵彻.A 3D finite element(FE)simulation model was built to investigate the synergistic effects of impact and attack angles on the penetration resistance of relatively thin aramid laminates to flat-noded bullets.Two scenarios of the impact responses of a 4-mm-thick aramid laminate were calculated,i.e.,considering the impact angle alone and considering the impact and attack angles together.The penetration resistance of the aramid laminate was reflected by the residual velocity of the bullet,the ballistic limit velocity and the perforation energy threshold of the target plate.Deformation and damage mechanisms of the laminate under different impact conditions were also analyzed.The main findings are:the ballistic limit velocity decreases and then increases with the initial impact angle;with the increasing impact velocity and the decreasing initial impact angle,the changes of the impact angle and the attack angle both tend to decrease;for a fixed impact angle,a negative attack angle is not conducive to penetration,but a positive attack angle is conducive to penetration.

关 键 词：着角 攻角 芳纶层合板 平头弹 弹道极限速度 穿孔能量阈值 

分 类 号：O347[理学—固体力学]