Experimental Research And Numerical Simulation Of Linetype Shaped Charge Jet's Penetration Into Alloyed Aluminum Plates

This thesis presents theoretic analysis, numerical simulation and experimental studies on characteristics of linetype jet penetration into alloyed aluminum plates. The main contents of study are as followings:1) A series of theories of jet formation and its penetration into targets are discussed in details.2) The dynamic character of LY12 is studied by experimenting on SHPB set. The experimental data are analyzed and processed into Stress-Strain curves with which the constants of Johnson-Cook material model are concluded.3) With site tests of penetration of jets into LY12 plates, the main parameters of linetype shaped charges and character of jets formed by the linear after explosion are studied. The results of penetration and also the explosion velocity are recorded.4) With the finite element calculation software LS-DYNA, the whole process of explosion, jet formation and penetration is simulated. Furthermore, by comparisons of simulation results of jet penetrations with different heights, different linear geometric forms and different linear angles respectively, the main influencing factors of jet formation of linetype shaped charge and its penetration effects are discussed.