WFeNiMo高熵合金弹丸高速撞击钢靶的数值模拟研究  

Numerical simulation study on high-speed impact of WFeNiMo high entropy alloy projectile on steel target

作　　者：郭凯[1] 史芳颖 GUO Kai;SHI Fang-ying(School of Equipment Engineering,Shenyang University of Technology,Shenyang 110159,China)

机构地区：[1]沈阳理工大学装备工程学院,辽宁沈阳110159

出　　处：《世界有色金属》2024年第17期25-27,共3页World Nonferrous Metals

摘　　要：随着现代武器装备防护能力的日益增强,提高穿甲弹侵彻能力的需求越发强烈,对穿甲弹的高效毁伤能力提出了更高的要求,常规的穿甲弹材料已不能满足现今侵彻毁伤目标的需求。由于高熵合金因其成分设计灵活和优异的力学性能,有望作为穿甲弹芯材料取代贫铀和钨合金等。利用二级轻气炮开展了WFeNiMo高熵合金弹丸高速撞击钢靶实验,利用弹丸撞击铜网产生的电压信号,同步触发高速摄像机。利用高速摄像机采集的弹丸高速碰撞过程,确定撞击速度分别为1072m/s和1346m/s。靶板厚度分别为4mm和10mm,WFeNiMo高熵合金弹丸对钢靶的毁伤模式分别为成坑和穿透。同时,利用物质点法(MPM)对WFeNiMo高熵合金弹丸撞击钢靶过程进行数值模拟。分别从扩孔直径、侵彻深度、剩余弹丸长度和翻唇高度等方面,对比WFeNiMo高熵合金弹丸高速撞击钢靶实验结果和MPM数值模拟结果。研究结果表明:MPM数值模拟结果与实验结果数值上的平均误差约为2%,且MPM弹靶毁伤形貌与实验毁伤形貌吻合MPM适用于高速冲击的数值模拟,能够较好地模拟弹丸侵彻靶板过程,且具有较高的仿真精度,计算所需时间少。With the increasing protection capability of modern weapons and equipment,the demand for improving the penetration ability of armor piercing shells has become stronger,and higher requirements have been put forward for the efficient destructive ability of armor piercing shells.Conventional armor piercing shell materials can no longer meet the needs of penetrating and destroying targets today.Due to its flexible composition design and excellent mechanical properties,high entropy alloys have the potential to replace depleted uranium and tungsten alloys as armor piercing core materials.A highspeed impact experiment of WFeNiMo high entropy alloy pellets on steel targets was conducted using a two-stage light gas gun.The voltage signal generated by the impact of the pellets on the copper mesh was used to synchronously trigger the high-speed camera.Using high-speed cameras to capture the high-speed collision process of projectiles,the impact velocities were determined to be 1072m/s and 1346m/s,respectively.The target plate thicknesses are 4mm and 10mm,respectively.The damage modes of WFeNiMo high entropy alloy pellets on steel targets are pitting and penetration.Meanwhile,the material point method(MPM)was used to numerically simulate the impact process of WFeNiMo high entropy alloy pellets on steel targets.Compare the experimental results of WFeNiMo high entropy alloy projectile high-speed impact on steel targets with the MPM numerical simulation results in terms of borehole diameter,penetration depth,remaining projectile length,and flap height.The research results show that the average error between MPM numerical simulation results and experimental results is about 2%,and the MPM target damage morphology is consistent with the experimental damage morphology.MPM is suitable for numerical simulation of high-speed impact and can simulate the process of projectile penetration into the target plate well,with high simulation accuracy and less calculation time.

关 键 词：WFeNiMo高熵合金 高速撞击 MPM数值模拟 

分 类 号：TG139.8[一般工业技术—材料科学与工程]