APPLICABILITY OF PROPOSED IMPACT RESPONSE ANALYSIS METHOD FOR RC BEAMS STRENGTHENED WITH NSM-AFRP RODS

Abstract

In order to establish a numerical analysis method for the RC beams strengthened with near-surface mounted (NSM) Aramid FRP (AFRP) rods under impact loading, proposing a 3D elaso-plastic FE analysis method assuming fictitious tensile strength based on an equivalent tensile fracture energy (G_f) concept for concrete element under the condition applying a smeared crack model, an applicability of the method was investigated comparing with the experimental results. From this study, it was seen that the RC beams can be better simulated by using fine meshes following proposed G_f concept excluding the case of bigger input impact energy.