Papers abstract:

This paper focuses on the mechanical behavior of aluminum alloy 2024-T351 under impact loading. This study has been carried out combining experimental and numerical techniques. Firstly, experimental impact tests were conducted on plates of 4 mm of thickness covering impact velocities from 50 m/s to 200 m/s and varying the stress state through the projectile nose shape: conical, hemispherical and blunt. The mechanisms behind the perforation process were studied depending on the projectile configuration used by analyzing the associated failure modes and post-mortem deflection. Secondly, a numerical study of the mechanical behavior of aluminum alloy 2024-T351 under impact loading was conducted. To this end, a three-dimensional model was developed in the finite element solver ABAQUS/Explicit. This model combines Lagrangian elements with Smoothed Particle Hydrodynamics (SPH) elements. A good correlation was obtained between numerical and experimental results in terms of residual and ballistic limit velocities.

Product Overview:
This simulation tutorial replicates the impact and perforation behavior of AA2024-T351 aluminum plates when struck by projectiles of various shapes. The model is based on a published ISI paper and enhanced through a video tutorial that incorporates damage modeling, absent in the original research. Key simulation steps include:

• Creating plate and projectile parts using exact geometry from the paper
• Assigning materials with and without Johnson-Cook damage
• Meshing the impact zone with refined elements
• Applying contact properties and initial projectile velocity
• Running explicit dynamic steps and visualizing failure modes.

In this tutorial, ballistic impacts from blunt, hemispherical, and conical projectiles are simulated, according to data from the work of Rodriguez-Millan et al.