A STUDY ON THE PERFORATION FAILURE OF STEEL PLATES SUBJECTED TO A FLAT－NOSE PROJECTILE IMPACT

Abstract

In recent years, wind-borne missiles due to tornados have frequently damaged residential houses and human lives. Although steel plates have been used in the protective design and reinforcement of nuclear facilities. Details of failure behavior of steel plates were not sufficiently investigated. In this study, in order to investigate the failure behavior of steel plates subjected to a flat-nose projectile impact, impact experiments and numerical analyses were conducted for 6 mm, 9 mm and 12 mm-thick steel plates using a 6.0 kg mass projectile with flat shape tip (diameter of 50 mm) at velocities of 40-100 m/s. In addition, an energy-based design method was proposed based on the deformation and perforation failure mechanisms of the steel plate examined by the numerical analysis.