Investigating the effect of ceramic-polyurea-aluminum layers on ballistic performance of composite target

IF 2.1 Q2 ENGINEERING, CIVIL
S. Jafari, A. Alavi Nia
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Abstract

In this research, the ballistic performance of ceramic-polyurea-aluminum composite targets under the impact of flat-nose projectile was investigated for different thicknesses. The relevant experiments were designed based on the thickness of the layers and the effect of their configuration was explored. Experimental tests were carried out using two types of gas gun devices with different calibers. Residual velocity of the projectile was extracted using ls-dyna software for all targets and compared with the experimental data and after validation, the ballistic limit velocity was extracted. Taguchi method was used to design experiments and optimization and ballistic limit velocity, surface density, and strength-to-weight ratio were considered as objective functions. Moreover, the residual velocity of the projectile, damage mechanism of layers, the diameter of the hole at the back layer, central displacement of the back layer, absorbed energy, and changes in the projectile velocity were also investigated. Based on the numerical results, ceramic had the greatest effect on reducing the velocity of the projectile (approximately between 55 and 65%). Strength-to-weight ratio and armor weight were considered as two objective functions in the optimization. The effect of each of the armor materials on the target functions was investigated. According to the results, ceramic had the greatest effect on increasing the strength-to-weight ratio (about 83.88%), and polyurea had the least effect (about 14.09%) on increasing the total weight of the armor.
陶瓷聚脲铝层对复合靶材弹道性能影响的研究
在本研究中,研究了不同厚度的陶瓷聚脲-铝复合靶材在扁鼻弹冲击下的弹道性能。根据层的厚度设计了相关的实验,并探讨了其配置的影响。使用两种不同口径的气枪装置进行了实验测试。使用ls-dyna软件提取了所有目标的弹丸剩余速度,并与实验数据进行了比较,验证后提取了弹道极限速度。采用田口方法进行实验设计和优化,弹道极限速度、表面密度和强度重量比被视为目标函数。此外,还研究了弹丸的残余速度、各层的损伤机理、背层孔洞直径、背层中心位移、吸收能量以及弹丸速度的变化。根据数值结果,陶瓷对降低弹丸速度的影响最大(约在55%至65%之间)。在优化中,强度重量比和装甲重量被视为两个目标函数。研究了每种装甲材料对目标功能的影响。根据结果,陶瓷对增加强度重量比的影响最大(约83.88%),聚脲对增加装甲总重量的影响最小(约14.09%)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
4.30
自引率
25.00%
发文量
48
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