Abstract
Aluminum to oxygen Al/O ratio is very important to the performance of aluminized explosives. In order to study the influence of the ratio on the performance of explosives in concrete, three kinds of aluminized explosives are taken into account, and their Al/O ratio are 0, 0.257 and 0.632, respectively. In this paper, the damaging process of concrete medium under explosion of cylindrical charge is numerically simulated using AUTODYN program. Meanwhile, within the range of relative distance from 2.5 to 10, shock wave pressure-time curve are obtained by means of numerical simulation and experiment. The numerical study shows that shock wave attenuation exponents are 2.10, 1.71 and 1.60, the exponents decrease with the increasing of Al/O ratio. In addition, shock wave energy is maximum when the Al/O ratio equals 0.257.
| Original language | English |
|---|---|
| Pages (from-to) | 513-519 |
| Number of pages | 7 |
| Journal | Baozha Yu Chongji/Expolosion and Shock Waves |
| Volume | 35 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 25 Jul 2015 |
Keywords
- Al/O ratio
- Attenuation exponent
- Concrete
- Mechanics of explosion
- Shock wave energy