A computational study on the overload characteristic curves of projectile penetrating metal object

The paper, based on ANSYS/LS-DYNA software, made a computational study on the overload characteristic curves of projectile penetrating metal objects. Adopting Lagrange method, Lagrangian-Eulerian coupling algorithm and SPH method, respectively, simulated the over-load characteristics of projectiles penetrating single-layer steel plates and multi-layer steel and aluminum alloy plates. The results affirmed that the curves agreed well with each other. The curves reached its peak during every penetrating layer and the accelerator peak declined with layers increasing. And the overload value fluctuated around zero during the penetrating interval. The fact, gained from the velocity curves, was that it dropped gradually, however, reached a plateau during the interval, suggesting that the velocity kept constant, and overload value came to zero. The simulation and the experimental results of penetrating the multi-layer aluminum alloy plates were in well accord. Besides, the overload curves shared the same trends with penetrating the multi-layer steel plates