活性破片作用后效靶板耦合能量分布特征

doi:10.12382/bgxb.2024.0526

摘要/Abstract

摘要：

为揭示活性破片穿透前靶后,对后效靶板的耦合能量分布特征及机理,开展活性破片毁伤双层靶板弹道枪实验。通过高速摄影记录弹靶作用行为,结合间隔靶毁伤形貌、破片侵靶破碎理论和二次碎片能量分布,建立活性破片作用后效靶板毁伤行为模型。研究结果表明,活性破片在毁伤后靶过程中,动能化学能分别在不同碰撞速度区间内占据主导地位,随碰撞速度增加,活性破片被完全激活,活性破片对后效靶板的毁伤从化学能主导转变为动能主导。

关键词: 活性破片, 二次碎片, 飞散行为, 耦合能量分布

Abstract:

To reveal the coupling energy distribution characteristics and mechanism of the reactive fragments penetrating the rear target plate, the ballistic gun experiment of the reactive fragment impacting the double-layer target plate is carried out. The bullet-target interactive behavior is recorded with high-speed photography, and a damage behavior model of the reactive fragments impacting the rear target plate is established based on the damage effect of target, the fragmentation theory of the fragments penetrating the target, and the secondary fragment energy distribution. The results show that the kinetic and chemical energies predominate in different impact velocity intervals during the process of reactive fragments impacting the rear target plate. With the increase in impact velocity, the reactive fragments are fully activated, and the damage of reactive fragments to the rear target plate changes from chemical energy to kinetic energy.

Key words: reactive fragment, secondary fragment, dispersion behavior, coupling energy distribution

中图分类号:

TJ012.4

周晟, 郭萌萌, 张甲浩, 葛超, 余庆波. 活性破片作用后效靶板耦合能量分布特征[J]. 兵工学报, 2024, 45(S1): 81-88.

ZHOU Sheng, GUO Mengmeng, ZHANG Jiahao, GE Chao, YU Qingbo. Coupling Energy Distribution Characteristics of Reactive Fragments Penetrating Rear Target Plate[J]. Acta Armamentarii, 2024, 45(S1): 81-88.

图/表 15

图1 活性破片试样

Fig.1 Reactive fragments

表1 活性破片性能参数

Table 1 Performance parameters of reactive fragments

破片组成	质量比	压缩弹性模量/GPa	屈服强度/MPa	断裂强度/MPa	断裂延伸率/%
W/Zr/Ni	3∶5∶2	21	1128	1568	10.1

图2 实验靶标

Fig.2 Experimental target

图3 弹道枪实验示意图

Fig.3 Schematic diagram of ballistic gun experimental arrangement

图4 典型靶板毁伤形貌

Fig.4 Typical target damage area

表2 间隔靶毁伤面积

Table 2 Experimental results of reactive fragments damaging to target plate

实验序号	碰撞速度/ (m·s^-1)	前靶毁伤面积/ mm²	后靶毁伤面积/ mm²
1	741	85.8434	212.3729
2	990	97.8005	795.1094
3	1540	142.1958	1399.112

图5 碰撞速度741m/s条件下高速摄像

Fig.5 High-speed photograph at 741m/s

图6 碰撞速度990m/s条件下高速摄像

Fig.6 High-speed photograph at 990m/s

图7 碰撞速度1540m/s条件下高速摄像

Fig.7 High-speed photograph at 1540m/s

图8 活性破片侵彻双层间隔靶板理论模型

Fig.8 The process of reactive fragments penetrating the space targets

图9 碰撞速度1013m/s条件下活性破片二次碎片云理论计算与高速摄像对比

Fig.9 Theoretical calculation and high-speed photographs of secondary fragment cloud of reactive fragments at the impact velocity of 1013m/s

图10 碰撞速度1540m/s条件下活性破片二次碎片云理论计算与高速摄像对比

Fig.10 Theoretical calculation and high-speed photographs of secondary fragment cloud of reactive fragments imaging at at the impact velocity of 1540m/s

表3 后靶毁伤面积内动能能量密度与激活质量密度

Table 3 Kinetic energy density and activation mass density in the damaged area of the rear target

实验序号	碰撞速度/ (m·s^-1)	比动能/ (J·mm^-2)	激活质量密度/ (g·cm^-2)
1	741		0.4012
2	990	1.9297	0.3876
3	1540	2.1303	0.2838

图11 二次碎片比动能及激活质量密度分布

Fig.11 Kinetic energy density and activation mass density distribution of secondary fragments

图12 活性破片对后靶临界能量毁伤面积

Fig.12 Rear target area damaged by reactive fragments

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