Nonlinear finite element analysis of Concrete Filled Steel Tube (CFST) columns under projectile impact loading
نویسندگان
چکیده
This paper presents a three dimensional nonlinear finite element analysis for Concrete Filled Steel Tube (CFST) columns subjected to lateral impact load. The finite element models were developed using commercial code ABAQUS/Explicit, which were validated against the experimental results. The study has been carried out to examine the influence of several parameters such as the length of the tube and projectile configurations. The Laser Doppler Velocimeter (LDV) and High Speed Camera (HSC) were used to capture the impact velocity and the deflection of the specimens, respectively, which were then implemented in the numerical modelling. It was found that the finite element simulations are in a good agreement with the experimental results, in terms of load-displacement traces and deformation modes. It was also demonstrated that with the increasing the length of the tube the lateral displacement was increased and the impact force was decreased.
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