Author(s)

CHUNGHYEON KIM, JAE-YEOL CHO

Abstract

Local behavior is generated by the impact of a projectile within a proximal area from the position of the impact, and consists of penetration of the projectile into the structure, perforation of the projectile, scabbing of the structural material, etc. A protective structure like a containment wall of a nuclear power plant should prevent local behavior by the impact of a projectile from causing internal damage to the protective structure, so accurate evaluation of the local behavior is necessary. For evaluation of the local behavior, evaluation of the penetration behavior is a priority because the penetration is primary local behavior affecting the mechanism of perforation, scabbing. In this study, impact tests were performed with reinforced concrete panels and a hard projectile to evaluate the penetration behavior of a concrete structure, test results were discussed, and an empirical formula for prediction of penetration depth was evaluated by using the formula form suggested by Forrestal. The conclusion of this study is that the effect of deflection of RC panels on the penetration depth by the impact of a projectile can be neglected for tested conditions and the evaluated prediction formula of penetration depth generally shows good agreement with the test results.

Keywords

impact loading, local behavior, penetration depth, hard projectile, RC panels