摘要
理论上分析了初始冲击温升对高速段射流的动态屈服强度的影响，并对孔隙度为11．4％铜粉末药型罩与紫铜药型罩进行了侵彻对比试验。试验结果表明，在1．3—3倍的装药口径范围内，铜粉末射流的性能要优于紫铜射流，最大穿深为紫铜射流的1．12倍。铜粉末药型罩比紫铜药型罩具有更高的冲击温升，使高速段的射流的粘性和动态屈服强度降低，提高了射流的延伸能力。
Compressibility of porous materials was considered, shock temperature rise effect on the dynamic strength of front jet was analyzed theoretically. Penetration test results show that the porous copper liner with 11.4% porosity has better penetration ability than the homogeneous one when the standoff distance is between 1. 3 and 3 charge diameters （CD） , and the maximum penetration of porous jet is 1. 12 times than that of copper one. The temperature rise in the porous liner is much higher, which is helpful to decrease jet viscosity and dynamic strength and increase the stretching ability at low standoff distance.
出处
《含能材料》
EI
CAS
CSCD
2008年第4期424-427,共4页
Chinese Journal of Energetic Materials
关键词
爆炸力学
聚能射流
孔隙度
多孔药型罩
低炸高
explosion mechanics
shaped charge jet
porosity
porous liner
low standoff distance
