土中爆炸地冲击能量分布研究

Study on ground shock energy distribution of explosion in soil

1.
Department of Civil Engineering, Tsinghua University, Beijing, 100084 China;
2.
Luoyang Hydraulic Engineering Technical Institute, Luoyang 471023, Henan, China;
3.
Beijing Canbao Engineering Design Academe, Beijing, 100850 China

摘要: 利用数值模拟方法研究了土中装药不同埋设深度爆炸能量分布问题，通过试验得到了耦合系数数据。给出了自由场条件下，封闭爆炸最小比例埋深为2.0 m/kg1/3，这与美军设计规范TM5-855-1中的数据0.56 m/kg1/3相差较大，分析了产生差异的可能原因。并指出本文中给出的冲量型耦合系数与TM5-855-1中的应力型耦合系数是有所区别的，应该注意其使用范围和对象。
- 爆炸力学 /
- 能量分布 /
- 数值模拟 /
- 地冲击 /
- 耦合系数
Abstract: The energy distribution for ground shock of explosion with different buried depths in soil is studied with numerical simulation method, and the coupling coefficient data is gained from test. The minimal scaled buried depth for close explosion in free-field is 2.0 m/kg1/3 gotten in the paper, there is much difference to the data 0.56 m/kg1/3 in Fundamentals of Protective Design for Conventional Weapons (TM5-855-1), and the reasons for difference are discussed. The coupling coefficient with impulse forms gotten in the paper is quite different to that with stress form in TM5-855-1, the range and object for using should be careful.
- mechanics of explosion /
- energy distribution /
- numerical simulation /
- ground shock /
- coupling coefficient