炸药爆炸变形和首次破碎的研究

胡栋; 韩肇元; 张寿齐; 赵玉华; 王炳仁; 陈军; 蔡庆军; 姚协成; 董石; 孙珠妹

doi:10.11858/gywlxb.2004.03.002

炸药爆炸变形和首次破碎的研究

doi: 10.11858/gywlxb.2004.03.002

1.
中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，四川绵阳 621900；
2.
中国工程物理研究院，四川绵阳 621900；
3.
中国科技大学近代力学系，安徽合肥 230026；
4.
四川大学高温高压物理研究所，四川成都 610065

详细信息

通讯作者:
胡栋

计量
- 文章访问数: 8059
- HTML全文浏览量: 299
- PDF下载量: 824
出版历程
- 收稿日期: 2003-01-20
- 修回日期: 2003-05-30
- 发布日期: 2004-09-05

Studies on Explosion Distortion and First Breakdown under Explosive Detonation

1.
Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China;
2.
China Academy of Engineering Physics, Mianyang 621900, China;
3.
Department of Modern Mechanism, China University of Science and Technology, Hefei 230026, China;
4.
Institute of High Temperature and High Pressure Physics, Chengdu 610065, China

More Information

Corresponding author: HU Dong

摘要

摘要: 利用纹影技术研究了炸药爆轰后驱动物质的变形过程。为了便于观察，待测物质选取为变形比较大的介质水。实验观察表明，在炸药爆轰作用下，筒状水的膨胀首先由雷管起爆端开始，形成了倾斜状、波浪形的界面。结果表明：阵面的波动破裂均从外界面开始，界面的不稳定性可能是导致其失稳并破碎的主要原因。实验还观察到炸药爆轰后不同延迟时间的物体从大块变成小块的发展过程。研究中克服了炸药爆轰产物发光对图像的影响，以及爆炸振动对光路的影响。研制了一种简易的触发探针，解决了外光源和炸药爆轰的同步问题。
- 爆炸 /
- 破碎 /
- 纹影 /
- 变形
Abstract: The distortion process of the charge envelope and first breakdown is studied in order to understand the formation process of explosion breakdown. The distortion process driven by explosive detonation is observed by means of schlieren technique. A large distortion medium－water is chosen as the sample for observation. The experimental observations show that the expansion of water in cylinder starts from the end of initiation for initiator, then forms a slant and wave interface. The results indicate that the breakdown of the wave interface starts with an outside. It is an important reason that the instability of interface may make it to destabilize and to break. It is observed experimentally that the matter dimension becomes smaller and smaller at different delay time after the explosive detonated. The influences of explosive detonation light on figure and of explosion vibration on light path were overcomed. A simple trigger was developed, and the problem of synchronization of outside light source with explosive initiation was resolved.
- explosive /
- breakdown /
- schlieren /
- distortion

HTML全文

参考文献(4)

Reitz R D, Bracco F B . Mechanism of Atomization of a Liquid Jet [J]. Phys Fluid, 1982, 25(4): 1730-1736.

Lin S P, Kang D J. Atomization of Liquid Jet [J]. Phys Fluid, 1987, 30(7): 3428-3436.

Presser C, Gupta A K, Semerjian H G. Aerodynamic Characteristics of Swirling Spray Flames: Pressure-Jet Atomiter [J]. Comb and Flame, 1993, 92(1): 25-31.

Gardner D R. Near-Field Dispersal Modeling for Liquid Fuel-Air-Explosive [R]. SAND90-0686, 1968.

施引文献

资源附件(0)

访问统计