Numerical Research of Influence of Attack Angle on Thin Aluminum Alloy Plate Impacted by Ogival-Nosed Projectile
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摘要: 基于Johnson-Cook材料本构和失效准则，利用ABAQUS有限元软件，建立了卵形头弹正撞击2mm厚的2A12铝合金薄板模型。在模型及参数验证的基础上，研究了弹体攻角对弹靶撞击过程、弹体动能变化和靶板变形的影响，其中攻角范围为0°~60°。结果表明：靶板的动能在撞击过程中只有微弱增加，靶板的塑性变形是主要的耗能方式；弹体攻角的增加导致靶板的损伤面积先增大后保持不变，弹孔形状从圆形过渡为“L”形；弹体的剩余动能随弹体攻角的增加而降低，并在攻角大于45°后保持不变；靶板弹道极限随攻角的增加先增加后略有下降，在45°时最大。Abstract: Based on the Johnson-Cook material constitutive and failure criteria, we established the models of 2A12 thin aluminum alloy plates with a thickness of 2 mm impacted by ogival-nosed projectiles using the finite element software ABAQUS, and studied the influence of the attack angles (0°-60°) on the projectiles' impacting processes, energy change and the deformation of targets on the basis of the verification of the models and parameters.The results show that the kinetic energy of the targets slightly increase during the impact process, and the plastic deformation is the main form of energy dissipation; the increase of the attack angle causes the broken area of the target to increase at first and then remain unchanged, and the shape of the hole transits from circular to "L"-shaped; the residual kinetic energy of the projectiles decreases with the increase of the attack angle and remains stable after the attack angle reaches 45°;the ballistic limits of the targets increase first and then decrease slightly with the attack angle, reaching the maximum when the angle was 45°.
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Key words:
- ogival-nosed projectile /
- attack angle /
- ballistic limit /
- numerical simulation
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图 1 卵形头弹形状和几何尺寸(单位：mm)
Figure 1. Shape and geometry of ogival-nosedprojectile (unit: mm)
图 9 不同攻角下弹体撞击仿真图像
Figure 9. Simulation images of projectile impacting target with different attack angles
图 10 不同攻角下弹体的剩余动能
Figure 10. Residual kinetic energy of projectileswith different attack angles
Density/(kg·m-3) Poisson's ratio E/GPa cp/(J·kg-1·K-1) Tr/K Tm/K m χ 2 770 0.33 71.7 921 293 863 1.426 0.9 A/MPa σu/MPa εu A1/MPa t1 w C ${\dot \varepsilon } $0/s-1 400 635 0.125 5 288 0.071 3 0 0.001 1.11×10-3 D1 D2 D3 D4 D5 D6 Wcr/MPa 0.116 0.211 -2.172 0.012 -0.012 56 13.04 150 
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[1] 刘瑞朝, 何满潮, 任辉启, 等.射弹侵彻中的攻角效应[J].北京理工大学学报, 2003, 23(1):26-29. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=bjlgdxxb200301007LIU R C, HE M C, REN H Q, et al.Effect of attack angle on a projectile's penetration[J].Transaction of Beijing Institute of Technology, 2003, 23(1):26-29. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=bjlgdxxb200301007 [2] 陈万祥, 郭志昆, 钱七虎.基于接触理论的弹体偏航机理[J].解放军理工大学学报(自然科学版), 2006, 7(5):458-466. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=jfjlgdxxb200605012CHEN W X, GUO Z K, QIAN Q H.Yawing mechanism of projectiles based on contact theory[J].Journal of PLA University of Science and Technology (Natural Science Edition), 2006, 7(5):458-466. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=jfjlgdxxb200605012 [3] 何庆, 宣海军, 廖连芳, 等.薄靶板受叶片形弹体撞击的数值仿真研究[J].工程力学, 2010, 27(4):234-239. https://www.cnki.com.cn/qikan-GCLX201004040.htmlHE Q, XUAN H J, LIAO L F, et al.Numerical simulation of a thin plate impacted by blade projectile[J].Engineering Mechanics, 2010, 27(4):234-239. https://www.cnki.com.cn/qikan-GCLX201004040.html [4] CHEN W X, GUO Z K, QIAN Q H, et al.Penetration depth for yaw-inducing bursting layer impacted by projectile[J].Journal of Central South University, 2012, 19(6):1002-1009. https://www.researchgate.net/publication/257758729_Penetration_depth_for_yaw-inducing_bursting_layer_impacted_by_projectile [5] 陈鸿, 周智炫, 黄洁.带迎角钨杆斜侵彻铝板数值仿真研究[J].实验流体力学, 2014, 28(2):85-89. doi: 10.11729/syltlx2014pz29CHEN H, ZHOU Z X, HUANG J.Numerical simulation study on tungsten rod oblique penetrating aluminum plate with attack angle[J].Journal of Experiments in Fluid Mechanics, 2014, 28(2):85-89. doi: 10.11729/syltlx2014pz29 [6] 许善迎, 关玉璞, 刘璐璐, 等.编织复合材料弹体和靶板偏航撞击响应分析[J].南京航空航天大学学报, 2017, 49(1):67-75. https://www.cnki.com.cn/qikan-GCLX201004040.htmlXU S Y, GUAN Y P, LIU L L, et al.Impact response of triaxial braided composite impacted by composite projectile with yaw angle[J].Journal of Nanjing University of Aeronautics & Astronautics, 2017, 49(1):67-75. https://www.cnki.com.cn/qikan-GCLX201004040.html [7] 张伟, 魏刚, 肖新科.2A12铝合金本构关系和失效模型[J].兵工学报, 2013, 34(3):276-282. http://manu48.magtech.com.cn/Jwk_bgxb/CN/article/downloadArticleFile.do?attachType=PDF&id=52ZHANG W, WEI G, XIAO X K.Constitutive relation and fracture criterion of 2A12 aluminum alloy[J].Acta Armamentarii, 2013, 34(3):276-282. http://manu48.magtech.com.cn/Jwk_bgxb/CN/article/downloadArticleFile.do?attachType=PDF&id=52 [8] DEY S, BØRVIK T, TENG X, et al.On the ballistic resistance of double-layered steel plates:an experimental and numerical investigation[J].International Journal of Solids & Structures, 2007, 44(20):6701-6723. https://core.ac.uk/download/pdf/82237109.pdf [9] IQBAL M A, GUPTA G, GUPTA N K.3D numerical simulations of ductile targets subjected to oblique impact by sharp nosed projectiles[J].International Journal of Solids & Structures, 2010, 47(2):224-237. https://www.sciencedirect.com/science/article/pii/S0020768309003746 [10] 李剑峰, 邓云飞, 贾宝惠.弹体边界效应对2A12薄靶抗撞击性能影响的数值模拟[J].高压物理学报, 2017, 31(1):42-50. doi: 10.11858/gywlxb.2017.01.007LI J F, DENG Y F, JIA B H.Numerical simulation of influence of projectiles' boundary effect on ballistic resistance property of 2A12 aluminum alloy targets[J].Chinese Journal of High Pressure Physics, 2017, 31(1):42-50. doi: 10.11858/gywlxb.2017.01.007 [11] 郝鹏, 卿光辉, 李建峰, 等.2A12铝合金薄板对卵形头弹抗撞击性能研究[J].振动与冲击, 2016, 35(17):19-25. https://www.cnki.com.cn/qikan-GYWL201701007.htmlHAO P, QING G H, LI J F, et al.Ballistic resistance of 2A12 thin plates against ogival-nosed projectiles impact[J].Journal of Vibration and Shock, 2016, 35(17):19-25. https://www.cnki.com.cn/qikan-GYWL201701007.html [12] 路志超, 董永香, 葛超, 等. 刚性弹丸对中厚靶斜侵彻弹道特性研究[C]//全国强动载效应及防护学术会议暨2014年复杂介质/结构的动态力学行为创新研究群体学术研讨会. 北京, 2014. http://cpfd.cnki.com.cn/Article/CPFDTOTAL-AGLU201407003057.htmLU Z C, DONG Y X, GE C, et al. Ballistic characteristics on penetrating medium-thick targets with rigid projectile[C]//National Symposium on Dynamic Load and Protection and Dynamic Symposium on Dynamic Mechanics of Complex Media/Structure in 2014. Beijing, 2014. http://cpfd.cnki.com.cn/Article/CPFDTOTAL-AGLU201407003057.htm [13] 陈小伟, 李维, 宋成.细长尖头刚性弹对金属靶板的斜侵彻/穿甲分析[J].爆炸与冲击, 2005, 25(5):393-399. doi: 10.11883/1001-1455(2005)05-0393-07CHEN X W, LI W, SONG C.Oblique penetration/perforation of metallic plates by rigid projectiles with slender bodies and sharp noses[J].Explosion and Shock Waves, 2005, 25(5):393-399. doi: 10.11883/1001-1455(2005)05-0393-07 [14] WARREN T L, FORRESTAL M J.Effects of strain hardening and strain-rate sensitivity on the penetration of aluminum targets with spherical-nosed rods[J].International Journal of Solids & Structures, 1998, 35(35):3737-3753. https://www.sciencedirect.com/science/article/pii/S0020768397002114 -
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