Simulation Of Jet Penetrating Concrete Target Process

Jet penetrate concrete target is an extremely complicated mechanical problem. Based on explicit dynamic analysis program AUTODYN, the numerical model to simulate the process of jet penetrating multi-layer target (perforating gun, casing and concrete target) is established with Lagrange method. The large deformation, high strain rate dynamic processes of penetrating multilayer targets by jet was studied in this work. Numerical results show consistent agreements with experimental results, the errors of penetration depth and diameter are 4.27% and 5.26%, respectively. The dynamic response of the penetration process was discussed, including the shock wave and velocity at collision point of the tunnel. The simulation model and Lagrange algorithm used in this research were proved to be reasonable and feasible. This approach can provide a guidance for effectiveness evaluation of oil perforating charge.