Product Overview:
In this tutorial, we explore the simulation of a dynamic compression test on a concrete column reinforced with CFRP bars using Abaqus. The concrete column is modeled as a three-dimensional solid part, while the CFRP bars are also represented as three-dimensional solid components. Additionally, two rigid bodies are included in the simulation to represent the support structure and hydraulic jack.

To accurately capture the behavior of concrete and its damage characteristics, the Concrete Damaged Plasticity model is employed. This model is a continuum-based plasticity damage framework for concrete, which recognizes two primary failure modes: tensile cracking and compressive crushing of the concrete material. For the CFRP bars, an elastic model using engineering constants is applied to define their behavior.

The simulation utilizes a dynamic explicit step to determine the failure zone and the maximum force capacity of the column. This approach is preferred over static solvers due to the significant convergence issues that can arise during analysis. The general contact algorithm is implemented to address all potential contact interactions within the simulation domain, incorporating friction as a contact property. The interaction between the concrete and CFRP bars is treated as ideal or perfect contact. Fixed boundary conditions are applied to the bottom rigid body, while the top body is subjected to displacement. A fine mesh is critical to ensuring accurate results.

Upon completion of the simulation, a range of results becomes available for analysis, including stress, plastic strain, tensile damage, compressive damage, and force-displacement diagrams.