Bullet Impact on Steel and Kevlar®/Steel Armor: Computer Modeling and Experimental Data
Bullet Impact on Steel and Kevlar®/Steel Armor: Computer Modeling and Experimental Data
复制标题
子弹对钢铁和 Kevlar®/钢装甲的冲击：计算机建模和实验数据
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
V. S. Berg
中科院分区：
文献类型：
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作者：
D. Preece;V. S. Berg
计算机液压代码分析和弹道测试已被用于研究钢板装甲对美国和世界各地常见的铅/铜子弹的有效性。Hydrocode模拟准确地预测了钢板厚度，这将阻止完全穿透，以及338口径子弹在钢装甲厚度中的撞击坑几何形状（深度和直径）。使用为钢装甲开发的流体代码模型，还对由Kevlar®和钢组合组成的装甲进行了研究。这些分析被用来设计在桑迪亚国家实验室的弹道实验室进行的实验。弹道实验室测试结果在钢板装甲的子弹撞击弹坑和测试过程中测量的弹坑之间进行了很好的比较。在使用组合装甲（Kevlar®/钢）的实验期间，钢在Kevlar®穿透后成为子弹撞击坑的见证板。使用钢验证板中的子弹撞击坑，确定Kevlar®装甲的流体代码预测不如金属准确。这种差异是由于Hydrocode（欧拉）材料模型无法准确表示纤维状Kevlar®的行为。因此，本文将介绍铅/铜子弹与几种装甲方案（1）钢、2）Kevlar®和3）Kevlar®/钢组合之间相互作用的流体代码预测和弹道实验室数据。
Computer hydrocode analyses and ballistic testing have been used to investigate the effectiveness of steel plate armor against lead/copper bullets commonly available in the U.S. and across the world. Hydrocode simulations accurately predict the steel plate thickness that will prevent full penetration as well as the impact crater geometry (depth and diameter) in that thickness of steel armor for a 338 caliber bullet. Using the hydrocode model developed for steel armor, studies were also done for an armor consisting of a combination of Kevlar® and steel. These analyses were used to design the experiments carried out in the ballistics lab at Sandia National Laboratories. Ballistics lab testing resulted in a very good comparison between the hydrocode computer predictions for bullet impact craters in the steel plate armor and those measured during testing. During the experiments with the combination armor (Kevlar®/steel), the steel became a witness plate for bullet impact craters following penetration of the Kevlar®. Using the bullet impact craters in the steel witness plate it was determined that hydrocode predictions for Kevlar® armor are less accurate than for metals. This discrepancy results from the inability of the hydrocode (Eulerian) material model to accurately represent the behavior of the fibrous Kevlar®. Thus, this paper will present the hydrocode predictions and ballistics lab data for the interaction between a lead/copper bullet and several armoring schemes: 1) steel, 2) Kevlar®, and 3) a Kevlar®/steel combination.Copyright © 2004 by ASME