Effect of concrete constitutive law on accuracy and applicability of numerical simulation of RC beams subjected to collision action

Abstract

Investigate the influence of the concrete constitutive law on the precision of numerical simulations for RC beams subjected to collision forces, simulations were conducted utilizing three distinct concrete constitutive laws. The numerical simulations were based on 134 impact loading experiments, including various cross-sectional dimensions, span lengths, reinforcing bar ratios, masses of weights, and impact velocities, conducted at both domestic and international research institutes. The concrete constitutive laws employed included the K&C model and two continuous surface cap models. The evaluation of analysis accuracy and the applicable range for each concrete constitutive law focused on the maximum displacement.