层叠顺序对UHMWPE-铝合金板抗冲击性能影响

Effect of stacking sequence on impact resistance of UHMWPE-aluminum alloy target

为探究层叠顺序对双硬度UHMWPE-铝合金板抗冲击性能影响,以高分子聚乙烯(UHMWPE)板、7075高强铝合金板为对象,利用一级轻气炮开展一系列平头和卵形弹打靶试验,对靶板弹道极限速度、能量吸收率、破坏模式等进行分析。揭示板材层叠顺序对接触式高分子聚乙烯-铝合金靶板防护性能的影响规律。结果表明:平头弹撞击下,UHMWPE板在前铝合金板在后的叠放顺序("软+硬")防护性能更高;卵形弹撞击下,两种叠放顺序靶板防护性能相近;两种叠放顺序靶板在平头弹撞击下均发生"冲塞破坏",在卵形弹冲击下均发生"延性扩孔"破坏。

The purpose of this paper is to investigate the effect of stacking sequence on the impact resistance of double hardness UHMWPE-aluminum alloy plates. Taking high molecular polyethylene(UHMWPE)plate and 7075 high strength aluminum alloy plate as objects,a series of blunt nose and oval nose projectile impacting tests were carried out by using first-stage light gas gun. Combined with the experimental data,the ballistic limit,energy absorption rate and failure mode of the target were analyzed. The effect of stacking sequence on the protective performance of contact polymer polyethylene-aluminum alloy target plate under the impact of blunt nose projectile and oval nose projectile was revealed. The results show that under the impact of blunt nose projectile,the stacking order of UHMWPE plate in front of aluminum alloy plate( "soft+hard")has higher protective performance. Under the impact of oval projectile,the two kinds of stacking sequence targets have similar protective performance.The two kinds of stacking sequence targets have "plug failure" under the impact of blunt nose projectiles,and "ductile reaming" damage under the impact of oval nose projectiles.