Abstract

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Title:: Numerical Simulation on Dynamic Hysteretic Behavior of Reinforced Concrete Columns with Two-scale Model

Author(s):: XU Bin; WANG Zhi-yuan; CHEN Hong-bing; College of Civil Engineering, Hunan University

Keywords:: reinforced concrete column; dynamic hysteretic behavior; ABAQUS subroutine; multi-scale model; numerical simulation; strain rate

Abstract:: In order to improve the simulation efficiency and investigate the local failure pattern of reinforced concrete (RC) column specimens under dynamic cyclic loadings, the subroutines describing the dynamic constitutive laws of concrete materials and reinforcement which were suitable for three dimensional (3D) fiber beam elements were developed in ABAQUS. Then, a twoscale finite element method (FEM) model composed of 3D fiber beam elements and 3D solid elements was established to simulate the dynamic cyclic behavior of the RC column specimens under cyclic loading. In the model, the deformation of the 3D fiber beam elements and the 3D solid elements at the interface was compatible. For comparison, two FEM models for the RC columns specimens composed of the fiber elements and solid elements solely were developed. The simulation results from the twoscale FEM model were compared with the test results firstly. The results show that the two-scale model using the developed subroutines describing the constitutive laws can simulate the load-carrying capacity and the dynamic hysteretic performance of the RC columns under rapid cyclic loading. The twoscale model can limit computation cost and achieve fine analysis of the RC column.