A STUDY FOR EVALUATING LOCAL DAMAGE TO REINFORCED CONCRETE PANELS SUBJECTED TO OBLIQUE IMPACT PART 3: SIMULATION ANALYSIS FOR EVALUATING PERFORATION PHENOMENA CAUSED BY OBLIQUE IMPACT OF DEFORMABLE PROJECTILES

摘要

The purpose of this study is to propose a new formula for evaluating the local damage to reinforced concrete structures caused by oblique impact based on past experimental results and simulation results. In this paper, we present the results of simulation analyses for evaluating the perforation of concrete panels due to oblique impact by deformable projectiles. Various response characteristics and perforation mechanisms such as detailed perforation behavior, damage to reinforced concrete panels, rupture states of the deformable projectiles, reduction in projectile velocity, and residual velocity of the projectile after perforation, and energy transfer processes are clarified. Especially, it is found that the sliding energy consumed by friction occurring at the contact surface between a projectile and a reinforced concrete panel due to oblique impact is remarkably larger than that due to normal impact.