多孔药型罩聚能射流的稳定性  

On stability of jet produced by shaped charge with porous liner

作　　者：李如江[1,2] 刘天生[1] 沈兆武[2] 樊自建[2] 

机构地区：[1]中北大学安全工程系,山西太原030051 [2]中国科技大学近代力学系,安徽合肥230027

出　　处：《爆炸与冲击》2009年第2期217-220,共4页Explosion and Shock Waves

摘　　要：基于Herrmann改进的Grüneisen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。Shock-induced temperature rise of the porous liner before collapse was calculated based on the Gruneisen 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.

关 键 词：爆炸力学 稳定性 孔隙度 聚能射流 断裂时间 

分 类 号：O385[理学—流体力学]