多孔药型罩聚能射流的稳定性

On stability of jet produced by shaped charge with porous liner

1.
Department of Safety Engineering, North University of China, Taiyuan 030051, Shanxi, China;
2.
Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, Anhui, China

摘要: 基于Herrmann改进的Grneisen状态方程，对多孔药型罩受冲击压缩产生的温升进行了估算，从理论上分析了孔隙度对射流断裂时间的影响。使用脉冲X光测试并结合侵彻实验研究了药型罩初始孔隙度为9.3%和11.4%时聚能射流的稳定性。研究结果表明，在一定孔隙度范围内，射流的稳定性随孔隙度的增加而增强。
- 爆炸力学 /
- 稳定性 /
- 孔隙度 /
- 聚能射流 /
- 断裂时间
Abstract: Shock-induced temperature rise of the porous liner before collapse was calculated based on the Grneisen equation of state revised by Herrmann, effect of porosity on the shaped charge break-up time was analyzed theoretically. The stability of jets produced by shaped charges with two different porous liners was studied with flash X-ray and penetration tests. It is shown that the jet stability increases with the porosity within a certain range of porosity.
- mechanics of explosion|stability /
- porosity|shaped charge jet|break-up time /