A study on the effects of case on the underwater explosion for aluminized explosive
XIANG Da-lin 1，RONG Ji-li 1，LI Jan 1,2，YANG Rong-jie 3
1.School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081,China2.Department of Automobile Engineering, Guangxi University of Technology ,Guangxi Liuzhou 5450061,China 3.School of Materials Science and Engineering Beijing Institute of Technology, Beijing 100081,China
Abstract：Underwater explosion experiments were carried out on the cylindrical aluminized explosives. The charges surrounded by 6mm thick steel casing、AL casing and PVC casing, and two bare charges were also fired. The shock wave pressure-time curves were measured at the distance of 3m、5m and 7m, and the peak pressure、impulse、energy of shock wave and bubble energy were also work out. Numerical simulations using AUTODYN-2D supported experimental results. According to the dimensional analysis and numerical simulation, the variation of shock wave profile、peak pressure and bubble period with the relative charge mass was studied. The results show that the peak pressure and energy of the shock wave would be all enhanced when the relative charge mass is small, but decrease when the relative charge mass too large. The bubble period was lower for the casing charge than that of the bare charge. The optimal relative charge mass was 1.45 for the steel casing charge. The finite element model and calculation results can provide a reference for the design of underwater weapons.
项大林;荣吉利;李 健;杨荣杰. 装药壳体对含铝炸药水下爆炸性能影响研究[J]. , 2013, 32(5): 81-85.
XIANG Da-lin;RONG Ji-li;LI Jan;YANG Rong-jie . A study on the effects of case on the underwater explosion for aluminized explosive. , 2013, 32(5): 81-85.
2013, Vol. 32 
