Analytical and numerical studies on impact force profile of RC beam under drop weight impact

Impact force and structural response of reinforced concrete (RC) beams under drop weight impact have been intensively studied reported in the literature. The prediction peak has well investigated while study overall profile governing is limited. parameters acting on a structure including force, plateau duration all affect responses. This investigates profiles from RC beams. effects global stiffness (by changing beam span boundary condition) are numerically by using LS-DYNA. A two-degree-of-freedom (2DOF) analytical model developed for fiber section analysis method to predict force. 2DOF validated test results. With model, simplified then proposed determining six characteristic points, which expressed empirical equations fitted parametric predicted shows good agreement with data.