A CONSIDERATION OF THE IMPACT RESPONSE OF RC SLABS SUBJECTED TO PROJECTILE IMPACT WITH DIFFERENT TIP SHAPES

Abstract

 In recent years, crucial damages to humans and structures caused by the impact due to natural disasters such as tornadoes and volcanic eruptions have occured. Projectiles have various shapes and it is necessary to elucidate the effect that the shape of the flying objects on the failure characteristics of RC slabs. This study investigated impact response of RC slabs subjeted projectile impact with different tip shapes. In the experimental study, impact tests were conducted for RC slabs by using different projectile tip shapes, and the crack properties and impact response were investigated. Then, numerical investigation to confirm the reproducibility of the experiment and to consider the impact response of the RC slabs was conducted. Solely the flat type projectile caused scabbing failure at 60 m/s, and the shear force generated in the RC slabs was the largest in the flat type projectile.