Experimental Investigation and Numerical Simulation of Decouple Coefficient of Elliptic Bipolar Linear Shaped Charge

To determine the decoupling coefficient of the ellipse bipolar linear shaped charge(EBLSC),a new testing method to explore the penetration effect of a set of EBLSC on blast hole target was presented by using the developed EBLSC.The proposed method was used to test the penetration effect of the same charge on six soft material targets with different pore sizes.The relationship between groove depth and aperture was obtained according to experimental data,thus the best relationship between projectile and target with EBLSC was figured out,namely the best decouple coefficient.To further verify the effectiveness of the proposed method,the numerical simulation by LS-DYNA was conducted to simulate the performance of EBLSC penetrating effect on soft material target.Results indicate the simulating data in agreement with the experimental methods well.