Publication: Perforation mechanics of 2024 aluminium protective plates subjected to impact by different nose shapes of projectiles
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2018-02
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Elsevier
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Abstract
This paper focuses on the mechanical behaviour of aluminium 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 behaviour of aluminium 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.
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AA 2024-T351, Perforation, Ballistic limit, Energy absorption, FEM-SPH
Bibliographic citation
Rodriguez-Millan, M., Garcia-Gonzalez, D., Rusinek, A., Abed, F. & Arias, A. (2018). Perforation mechanics of 2024 aluminium protective plates subjected to impact by different nose shapes of projectiles. Thin-Walled Structures, vol. 123, pp. 1-10.