摘要
When shaped charge penetrats into concrete,crater diameter must meet certain requirements.By using theories of shaped jet formation and crater diameter growth during jet penetrating concrete,we revealed the thresholds of the velocity and diameter of jet head,and therefore obtained the related structure parameters of top liner,so that shaped charge structure was developed.We built a?60mm copper liner and a?142mm Ti-alloy liner which followed the rules of 0.6cal and 0.7cal in-crater diameter.respectively.X-ray experiment and penetration test results showed that the parameters of jet head were consistent with the results of theoretical analysis.The in-crater diameter of?60mm shaped charge reached 36 mm,and the?142mm one reached 100 mm.They both met the design requirements.
When shaped charge penetrats into concrete, crater diameter must meet certain requirements. By using theories of shaped jet formation and crater diameter growth during jet penetrating concrete, we revealed the thresh- olds of the velocity and diameter of jet head, and therefore obtained the related structure parameters of top liner, so that shaped charge structure was developed. We built a Ф60 mm copper liner and a Ф142 mm Ti-alloy liner which followed the rules of 0.6 eal and 0.7 cal in crater diameter, respectively. X-ray experiment and penetration test results showed that the parameters of jet head were consistent with the results of theoretical analysis. The incrater diameter of 52560 mm shaped charge reached 36 ram, and the 525142 mm one reached 100 ram. They both met the design requirements.
