In this tutorial, the Simulation cyclic loading of a composite Column(UHPC + Steel box) in Abaqus has been studied. The Ultra-High-Performance Concrete column is modeled as a three-dimensional solid part. The steel box cover is modeled as a three-dimensional shell part. You can see a figure of the assembled parts below
The concrete-filled steel box has great potential to be used in the construction of bridges and buildings. Although concrete is the most universally used material in building there are still some limitations to its use, such as low tensile strength and brittleness. Ultra-High Performance Concrete (UHPC), a cutting-edge concrete, may be able to overcome these concerns.
The Concrete Damaged Plasticity model is used to define UHPC column behavior under cyclic loading. The model is a continuum, plasticity-based, damage model for concrete. It assumes that the main two failure mechanisms are tensile cracking and compressive crushing of the concrete material. to define steel box behavior, the elastic-plastic model with ductile damage criterion to consider the damage during the cyclic loading is used. The general static step with some changes in the convergence model to avoid early not convergence is considered. Two types of interaction between the UHPC column and steel are assumed, the First, the cohesive surface interaction, and the second, the perfect contact. To define cohesive surface interaction, stiffness, damage, and fracture energy should be defined. The fixed boundary condition is assigned to the bottom surfaces of the composite column and displacement with cyclic protocol to the top surface of it. The mesh should be fine to obtain correct results
After the simulation, all results such as stress, strain, displacement, damage, Hysteresis diagram, and… are available. You can see some figures for the results below
You can provide CAE, INP, and English video files of this simulation here. The cost of these files is Twenty-Five Euros. you can click on the bellow bottom to beginning the process
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