Coupled Numerical-experimental Study Of
An Armour Perforation By The
Armour-piercing Projectiles
Author(s)
B. Zduniak, A. Morka & T. Niezgoda
Abstract
This paper concerns an analysis of target penetration by a selected armourpiercing
(AP) projectile: 7.62x54R with steel core. Numerical and experimental
research was carried out. The aim of this work was a comparison of the results
obtained in real conditions of ballistic test and computer simulation. In this
study, two three-dimensional targets and the core of the projectile were built.
The structure of the projectile is complex, but steel core plays the main role in
the perforation process. Then the numerical model of the projectile was reduced
to describe only steel core dynamics. The 3D Element Free Galerkin method is
applied to solve the problem under consideration. The algorithm implemented in
the Ls-Dyna code was used. Space discretization of the analyzed problem was
prepared by means of the HyperWorks Software (HyperMesh module). The total
amount of the elements reaches 500 000 in this model. The Johnson-Cook
constitutive model is applied to describe the behaviour of the metallic parts: steel
layers and the projectile’s core. The experimental results were obtained using a
high speed video-camera. The target penetrations by the projectile were
recorded. The processing of the data obtained from a high speed camera was
carried out by means of the TEMA Software. In this paper, a good correlation
between the numerical and experimental results was obtained. A lot of
interesting mechanical effects observed during the experiment were analyzed.
Keywords: penetration, perforation, numerical model, constitutive model,
armour.
Keywords
penetration, perforation, numerical model, constitutive model,armour
Related Book
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