爆炸驱动固/液介质爆炸抛撒的实验研究

蒋海燕; 王树山; 魏继锋; 饶彬; 张之暐

doi:10.11883/1001-1455(2014)05-0574-06

爆炸驱动固/液介质爆炸抛撒的实验研究

doi: 10.11883/1001-1455(2014)05-0574-06

1.
北京理工大学爆炸科学与技术国家重点实验室，北京 100081
2.
中国兵器工业导航与控制技术研究所，北京 100089

详细信息

作者简介:
蒋海燕(1985—), 女, 博士研究生

中图分类号: O389
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- 被引次数: 0
出版历程
- 收稿日期: 2013-03-25
- 刊出日期: 2014-09-25

Explosive dispersal of solid and liquid media: Experimental investigation

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2.
Navigation and Control Technology Institute of Norinco Group, Beijing 100089, China

摘要

摘要: 针对爆炸驱动固/液介质抛撒混合过程设计了透明双层抛撒装置。采用高速运动分析系统记录抛撒装置壳体破碎和固/液界面、固/液介质抛撒形态的演变过程，结果表明：壳体裂纹的产生和断裂首先出现在轴向方向；固/液界面在外层壳体破碎之前清晰可见，表明固/液介质的混合主要发生在壳体破碎之后；导爆索驱动下呈现滑移爆轰驱力特征，介质抛撒形状呈倒圆台形，不同截面处的介质运动速度随截面到起爆端轴向距离的增大而减小。
- 爆炸力学 /
- 爆炸抛撒 /
- 滑移爆轰 /
- 固体粉末 /
- 液体 /
- 界面
Abstract: According to the dispersal mixing process of explosive-driven solid powder and liquid, a transparent double-layer dispersal device was designed.A high-speed photography system was used to record the shell crushing of the dispersal device and the evolution of the solid-liquid interface and dispersal cloud status.The crack in the shell appeared and the shell fractured first along the axial direction of the shell.Before the outer shell broke, the solid-liquid interface was clear, which indicated that the solid powder and liquid mixed mainly after the shell failure.The detonation waves driven by the detonating cord presented sliding-detonation characteristics, the dispersal cloud shape took on an inverted truncated cone, and the cloud movement velocities at the different sections were inversely proportional to the axial distance of the sections from the initiation location.
- mechanics of explosion /
- explosive dispersal /
- sliding detonation /
- solid powder /
- liquid /
- interface

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图 1 实验装置示意图

Figure 1. Schematic of experimental arrangement

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图 2 实验装置

Figure 2. Experimental device

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图 3 爆炸抛撒过程分幅照片

Figure 3. Sequential photos of explosive dispersal process

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图 4 壳体变形示意图

Figure 4. Distortion sketch of shell

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图 5 云团半径变化曲线

Figure 5. Cloud radius varied with time

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图 6 速度变化运动曲线

Figure 6. Velocities varied with time

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图 7 介质爆炸抛撒示意图

Figure 7. Schematic diagram of medium explosive dispersal

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表 1 不同截面上抛撒介质运动参数

Table 1. Parameters of motion on different sections

y′/mm	v_max/(m·s^-1)	R_v/mm	t_v/ms
0	42.075	106.85	1.8
20	36.975	126.68	2.6
40	31.125	126.28	3.4
60	29.167	116.95	3.8
80	24.000	111.72	4.2

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