SIMULATION OF LONG-ROD PROJECTILE PENETRATING REACTIVE ARMOR USING THE FE-SPH ADAPTIVE COUPLING METHOD

The process of a long-rod projectile penetrating reactive armor is simulated based on the self-code adaptive coupling method of Finite Element-Smoothed particle hydrodynamics (FE-SPH). An ignition and growth model is incorporated into the FE-SPH adaptive coupling method to reproduce the detonation process of condensed explosive which is initiated by the penetrating of a long-rod projectile. A two-dimensional axisymmetric model for a long-rod projectile penetrating reactive armor is firstly simulated and compared with theoretical solution to verify the effectiveness of FE-SPH adaptive coupling method. Then, the process of long-rod projectile oblique penetrating into a reactive armor is simulated and analyzed by the FE-SPH adaptive coupling method. The efficiency of reactive armor responses to long-rod projectile penetrating is successfully reproduced in the simulation. Compared with the experiment data and other numerical results, it is indicated that the FE-SPH adaptive coupling method can be able to integrate the simulation of a long-rod projectile penetrating reactive armor and subsequent targets.