2024-T42铝板抗球形钢弹侵彻特性研究
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摘要
为了研究2024-T42铝合金平板的弹道毁伤特性,利用一级空气炮装置进行25.4mm球形钢弹垂直撞击2024-T42铝合金平板实验,得到铝板在钢弹侵彻下的损伤特性和弹道极限速度,之后基于LS-DYNA有限元软件对钢弹撞击过程进行仿真分析,并详细分析了钢弹撞击过程中铝板的损伤和变形。实验和仿真结果表明:5mm厚2024-T42铝合金平板在直径25.4mm球形钢弹撞击作用下的弹道极限速度为151.7m/s;钢弹侵彻过程中铝板发生局部剪切冲塞破坏和开裂损伤;钢弹初速度大于弹道极限速度,钢弹动能损失基本不变,钢弹初速度小于弹道极限速度,钢弹动能损失随初速度减小而减少。
2024-T42 aluminum plate was normally impacted by spherical projectile using gas gun setup to study the ballistic damage characteristics of the aluminum plate. The impact failure performance and ballistic limit velocity were obtained. Then the impact process of spherical projectile has been analyzed based on LS-DYNA finite element software. The damage and deformation of aluminum plates during the impact of projectile have been deeply analyzed.The result indicated that the ballistic limit velocity of the 5mm aluminum plate was 151.7m/s under the impact of spherical projectile. And the local shear bulging and cracking damage occurred during the penetration process of the spherical projectile. When the initial velocity of projectile is greater than the ballistic limit velocity, the loss of kinetic energy of projectile is almost constant. On the contrary, the loss of kinetic energy decreases with the decrease of initial velocity.
2024-T42 aluminum plate was normally impacted by spherical projectile using gas gun setup to study the ballistic damage characteristics of the aluminum plate. The impact failure performance and ballistic limit velocity were obtained. Then the impact process of spherical projectile has been analyzed based on LS-DYNA finite element software. The damage and deformation of aluminum plates during the impact of projectile have been deeply analyzed.The result indicated that the ballistic limit velocity of the 5mm aluminum plate was 151.7m/s under the impact of spherical projectile. And the local shear bulging and cracking damage occurred during the penetration process of the spherical projectile. When the initial velocity of projectile is greater than the ballistic limit velocity, the loss of kinetic energy of projectile is almost constant. On the contrary, the loss of kinetic energy decreases with the decrease of initial velocity.
引文
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[3]陈春黾,李伯龙,聂怍仁,等.穿甲甲弹侵彻铝合金靶靶板数值模拟研究[J].科学技技术与工程,20110,10(14):3442-33445.[CHENChun-min,LI Boo-long,NIE Zuo-r ren.Numerical SSimulation of PProjectile Penett rating Aluminu um Alloy Tar get[J].Science Technology and Engineering,2010,10(14):3442-3445.]
[4]朱峰,朱卫华,王王怡舒,等.卵形弹弹头子弹侵彻铝-铁复合靶的数值分析[J].兵兵工学报,2011,32(5):24-27.[ZHUUFeng,ZHUWei-hua,WANGYi-shu.Numeri ical Analysis o f Penetrating FFerroaluminum Composite Target for Ovoid Bullett[J].Journal of Sichuan Ordnancee,2011,32(5):24-227.]
[5]惠旭龙,刘小川,王计真,等.TC4钛合金平板高速速撞击损伤及弹道极限特性[J].科学技术与工程,2017,17(11):1-8.[XIXu-long;LIU Xiaa o-chuan;WANGJi-zhen,et al.HHigh Velocity Impact Failure an d Ballistic Perform mance of TC4 Plaa te[J].,Science Technology and Engineering,,2017,,17(11):1-8.]
[6]Warren T L,Kevv in L P.Penetraat tion of 6061-T65511 aluminum targets by ogive-nosed VAR 4043 steel bullets at oblique angles:experiments and simulations[J].International Journal of Impacting Engineering,2001,25(10):993-1022.
[7]Rusinek A,Rodrguez-Martinez J A,Arias A.Influence of conical projectile diameter on perpendicular impact of thin steel plate[J].Engineering Fracture Mechanics,2008,75:2946-2967.
[8]M A Iqbal,G Gupta,A Diwakar,et al.Effect of projectile nose shape on the ballistic resistance of ductile targets[J].European Journal of Mechanics A/Solids,2010,29:683-694.
[9]K M Kpenyigba,T Jankowiak,A Rusinek,et al.Influence of projectile shape on dynamic behavior of steel sheet subjected to impact and perforation[J].Thin-Walled Structures,2013,65:93-104.
[10]M A Iqbal,G Gupta,N K Gupta.3D numerical simulations of ductile targets subjected to oblique impact by sharp nosed projectiles[J].International Journal of Solids and Structures,2010,47:224-237.
[11]王礼立,胡时胜,杨黎明,等.材料动力学[M].合肥:中国科学技术大学出版社,2017.
[12]G Tiwari,M A Iqbal,P K Gupta,et al.The ballistic resistance of thin aluminum plates with varying degrees of fixity along the circumference[J].International Journal of Impacting Engineering,2014,74:46-56.
[13]Murat Buyuk,Steve Kan,Matti J Loikkanen.Explicit finite-element analysis of 2024-T3/T351 aluminum material under impact loading for airplane engine containment and fragment shielding[J].Journal of Aerospace Engineering,2009,22:287-295.
[14]孙岩,汤文辉,张若棋.基于CFD/CSD/CAA耦合的声气动弹性仿真技术在壁板颤振中的应用[J].强度与环境,2004,31(3):8-11.[SUN Yan,TANG Wen-hui,ZHANG Ruo-qi.A study on anti-penetration characteristics of SFRC with single layer of tightly arrayed corundum spheres[J].Structure&Environment Engineering,2004,31(3):8-11.]