Fragmentation of armor piercing steel projectiles upon oblique perforation of steel plates
In this study, a constitutive strength and failure model for a steel core of a14.5 mm API projectile was developed. Dynamic response of a projectile steel core was described by the Johnson-Cook constitutive model combined with principal tensile stress spall model. In order to obtain the parameters r...
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2012-08-01
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Series: | EPJ Web of Conferences |
Online Access: | http://dx.doi.org/10.1051/epjconf/20122604032 |
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doaj-155092a2a8ce490aa33752bbaa48770e2021-08-02T12:28:49ZengEDP SciencesEPJ Web of Conferences2100-014X2012-08-01260403210.1051/epjconf/20122604032Fragmentation of armor piercing steel projectiles upon oblique perforation of steel platesAizik F.Ran E.Vizel A.Weiss A.Paris V.In this study, a constitutive strength and failure model for a steel core of a14.5 mm API projectile was developed. Dynamic response of a projectile steel core was described by the Johnson-Cook constitutive model combined with principal tensile stress spall model. In order to obtain the parameters required for numerical description of projectile core material behavior, a series of planar impact experiments was done. The parameters of the Johnson-Cook constitutive model were extracted by matching simulated and experimental velocity profiles of planar impact. A series of oblique ballistic experiments with x-ray monitoring was carried out to study the effect of obliquity angle and armor steel plate thickness on shattering behavior of the 14.5 mm API projectile. According to analysis of x-ray images the fragmentation level increases with both steel plate thickness and angle of inclination. The numerical modeling of the ballistic experiments was done using commercial finite element code, LS-DYNA. Dynamic response of high hardness (HH) armor steel was described using a modified Johnson-Cook strength and failure model. A series of simulations with various values of maximal principal tensile stress was run in order to capture the overall fracture behavior of the projectile’s core. Reasonable agreement between simulated and x-ray failure pattern of projectile core has been observed. http://dx.doi.org/10.1051/epjconf/20122604032 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Aizik F. Ran E. Vizel A. Weiss A. Paris V. |
spellingShingle |
Aizik F. Ran E. Vizel A. Weiss A. Paris V. Fragmentation of armor piercing steel projectiles upon oblique perforation of steel plates EPJ Web of Conferences |
author_facet |
Aizik F. Ran E. Vizel A. Weiss A. Paris V. |
author_sort |
Aizik F. |
title |
Fragmentation of armor piercing steel projectiles upon oblique perforation of steel plates |
title_short |
Fragmentation of armor piercing steel projectiles upon oblique perforation of steel plates |
title_full |
Fragmentation of armor piercing steel projectiles upon oblique perforation of steel plates |
title_fullStr |
Fragmentation of armor piercing steel projectiles upon oblique perforation of steel plates |
title_full_unstemmed |
Fragmentation of armor piercing steel projectiles upon oblique perforation of steel plates |
title_sort |
fragmentation of armor piercing steel projectiles upon oblique perforation of steel plates |
publisher |
EDP Sciences |
series |
EPJ Web of Conferences |
issn |
2100-014X |
publishDate |
2012-08-01 |
description |
In this study, a constitutive strength and failure model for a steel core of a14.5 mm API projectile was developed. Dynamic response of a projectile steel core was described by the Johnson-Cook constitutive model combined with principal tensile stress spall model. In order to obtain the parameters required for numerical description of projectile core material behavior, a series of planar impact experiments was done. The parameters of the Johnson-Cook constitutive model were extracted by matching simulated and experimental velocity profiles of planar impact. A series of oblique ballistic experiments with x-ray monitoring was carried out to study the effect of obliquity angle and armor steel plate thickness on shattering behavior of the 14.5 mm API projectile. According to analysis of x-ray images the fragmentation level increases with both steel plate thickness and angle of inclination. The numerical modeling of the ballistic experiments was done using commercial finite element code, LS-DYNA. Dynamic response of high hardness (HH) armor steel was described using a modified Johnson-Cook strength and failure model. A series of simulations with various values of maximal principal tensile stress was run in order to capture the overall fracture behavior of the projectile’s core. Reasonable agreement between simulated and x-ray failure pattern of projectile core has been observed. |
url |
http://dx.doi.org/10.1051/epjconf/20122604032 |
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