金属基活性破片侵彻间隔铝靶作用行为

doi:10.12382/bgxb.2022.0232

摘要/Abstract

摘要：

为揭示活性破片穿靶毁伤机理,研究活性破片靶后碎片云与毁伤效应行为,开展了金属基活性破片侵彻间隔铝靶弹道枪实验。通过观察间隔铝靶穿孔模式与弹靶作用行为高速摄像,结合破片侵靶破碎理论、能量守恒定律和活性破片激活响应行为,分析活性破片侵彻间隔铝靶作用行为。研究结果表明:球形活性破片侵彻间隔铝靶时,对前靶造成冲塞毁伤,靶后形成碎片云对后靶造成动能-化学能耦合毁伤,后靶毁伤主要呈现为中心贯穿和碎片撞击复合模式,活性破片激活程度随碰撞速度增加呈增大趋势:建立了活性破片靶后碎片云理论模型,获得了碎片云演化规律,在不同碰撞速度下,临界贯穿孔径位置处的单位碎片动能与单位反应质量呈负相关关系。

关键词: 金属基活性破片, 间隔铝靶, 弹道枪实验, 碎片云

Abstract:

Ballistic impact experiments are conducted on metal-based reactive fragments impacting spaced targets to investigate the post-target debris cloud and damage effect behaviors of the reactive fragments, and to reveal the mechanism of their penetration. By observing the perforation mode of spaced target and the action behavior of fragments, we combine the breakage theory of target penetration, energy conservation law, and the reactivation response behaviors of reactive fragments to analyze and discuss the behaviors of reactive fragments penetrating spacer aluminum targets. The results show that the front target is plugging, and the rear target mainly presents the composite mode of center penetration and debris impact due to the kinetic energy-chemical energy coupling damage of post-target debris cloud. With increasing impact velocity, the reactive of reactive fragments increases. The theoretical model of the reactive fragments’ post-target debris cloud is established, and the evolution law of debris cloud is obtained. At different impact velocities, the unit debris kinetic energy is negatively correlated with unit reaction mass at the position of the critical through aperture.

Key words: metal-based reactive fragments, spaced aluminum targets, ballistic gun experiment, debris cloud

中图分类号:

TJ012.4

周晟, 张甲浩, 余庆波. 金属基活性破片侵彻间隔铝靶作用行为[J]. 兵工学报, 2023, 44(8): 2263-2272.

ZHOU Sheng, ZHANG Jiahao, YU Qingbo. Behaviors of Metal-based Reactive Fragments Penetrating Spaced Aluminum Targets[J]. Acta Armamentarii, 2023, 44(8): 2263-2272.

图/表 13

图1 活性破片及其准静态压缩应力-应变曲线

Fig.1 Reactive fragments and quasi-static compressive stress-strain curves

表1 活性破片力学性能参数

Table 1 Mechanical properties of reactive fragments

弹性模量/GPa	屈服强度/MPa	断裂强度/MPa	断裂延伸率/%
21	1128	1568	10.1

图2 实验靶标及其结构示意图

Fig.2 Experimental target and target structure schematic

图3 实验测试系统及其实物照片

Fig.3 Schematic and image of the experimental test system

表2 典型靶板毁伤区域图片

Table 2 Image of typical target damage area

表3 活性破片侵彻间隔靶毁伤面积及穿孔情况实验数据

Table 3 Experimental results of reactive fragments damage to spacer target

序号	碰撞速度/ (m·s^-1)	破片截面积/mm²	前靶毁伤面积/mm²	前靶穿孔模式	后靶毁伤面积/mm²	贯穿孔半径/mm	毁伤区半径/mm	后靶穿孔模式
1	778	50.2655	64.3774	冲塞型	50.2359	4.12	7.50	花瓣型
2	780	50.2655	63.2158	冲塞型	50.4183	4.12	7.51	花瓣型
3	1017	50.2655	54.6541	冲塞型	71.2300	5.30	16.00	花瓣型
4	1024	50.2655	55.1223	冲塞型	72.6291	5.32	16.04	花瓣型
5	1489	50.2655	86.5922	冲塞型	332.3194	11.00	31.49	花瓣型
6	1493	50.2655	86.9156	冲塞型	334.4931	11.10	34.51	花瓣型

图4 典型高速摄像

Fig.4 Typical high-speed photographs

图5 活性破片侵彻靶板作用过程

Fig.5 Process of reactive fragments penetrating the plate

图6 不同碰撞速度活性破片靶后碎片云演化规律

Fig.6 Evolution of post-target debris cloud with different impact velocities

图7 活性破片破碎尺寸、激活尺寸和稀疏波卸载尺寸

Fig.7 Fragmentation, activation and sparse wave unloading size of reactive fragments

图8 活性破片碎片云总动能和激活程度与碰撞速度关系

Fig.8 Relationship between the total kinetic energy and activation degree

图9 碎片云作用靶板示意图

Fig.9 Schematic diagram of target plate acted by debris cloud

图10 不同碰撞速度下后靶贯穿孔径位置处单位碎片动能与反应质量

Fig.10 Unit debris kinetic energy and reaction mass at the position of rear target through aperture at different impact velocities

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