Product Overview:

In this tutorial, we explore the simulation of the pull-out process of a deformed steel bar from concrete using Abaqus. The primary objective of this simulation is to analyze damage and failure zones within the concrete slab. The concrete component is modeled as a three-dimensional solid part, while the deformed steel bar is imported into the software due to its complex geometry.

The deformed steel bar is characterized as an elastic-plastic material with ductile damage behavior. The ductile damage criterion, along with its evolution, is employed to define the damage progression in the steel bar, allowing for the prediction of damaged and failed regions throughout the simulation. Among the various material models available for concrete in Abaqus, the Johnson-Holmquist model is selected for this analysis. This model is particularly effective for predicting dynamic failure in brittle materials and is accessible via a subroutine or input file.

A dynamic explicit step is utilized for the analysis, with the mass scaling technique applied to reduce simulation time and ensure model stability. An ideal or perfect contact condition is established between the deformed bar and the concrete. Fixed boundary conditions are assigned to the sides of the concrete slab, while a smooth amplitude displacement is applied to the deformed steel bar. It is crucial to use a fine mesh to achieve accurate results.

After completing the simulation, various results are available, including stress, strain, damage and failure in the concrete, as well as ductile damage in the steel bar.