3D numerical simulation of oblique penetration of antirunway penetrator to a multilayer runway target

The process of penetrating obliquely a multilayer runway with antirunway KE penetrator was numerically simulated by the finite element code LS-DYNA3D. The influences of the penetration velocity, angle, centroid of projectile and medium interface in the runway on penetration process were studied. The result indicates that the overturned angle of projectile could be reduced and the penetration depth increases when the centroid of projectile is moved ahead; the existence of multilayer medium interface accelerates overturn, which is obvious at smaller penetration velocity and larger incidence oblique angle, changes overload response and aggravates stress concentration for the penetrator. The simulated results have reference value for the design of the penetrator.