2019
DOI: 10.1016/j.ijimpeng.2019.05.006
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Ballistic limit predictions for perforation of aluminium armour plates by rigid nose-pointed projectiles

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Cited by 16 publications
(10 citation statements)
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“…The cavity expansion models use the solution of the pressure for steady expansion of a cavity in an infinite medium as the contact pressure experienced by a projectile that penetrates a target. While the assumption of spherical or cylindrical flow fields in the target material during the penetration may be considered a rough approximation to the actual flow field (Yarin et al, 1995;Roisman et al, 1997;Rubin et al, 2016), cavity expansion theories have been widely accepted as a basic physical model underlying perforation and penetration mechanics in metallic materials (Masri, 2016). According to Durban and Masri (2004) and Cohen and Durban (2013a), key to the success of the cavity expansion theories is that they provide simple expressions for critical parameters like the resisting force, the ballistic limit and the penetration depth (e.g.…”
Section: Introductionmentioning
confidence: 99%
“…The cavity expansion models use the solution of the pressure for steady expansion of a cavity in an infinite medium as the contact pressure experienced by a projectile that penetrates a target. While the assumption of spherical or cylindrical flow fields in the target material during the penetration may be considered a rough approximation to the actual flow field (Yarin et al, 1995;Roisman et al, 1997;Rubin et al, 2016), cavity expansion theories have been widely accepted as a basic physical model underlying perforation and penetration mechanics in metallic materials (Masri, 2016). According to Durban and Masri (2004) and Cohen and Durban (2013a), key to the success of the cavity expansion theories is that they provide simple expressions for critical parameters like the resisting force, the ballistic limit and the penetration depth (e.g.…”
Section: Introductionmentioning
confidence: 99%
“…In this logarithmic formulation the spherical cavitation effective yield stress (π‘Œπ‘Œ 𝑐𝑐 𝑆𝑆 ) is shown to play an essential role. Comprehensive comparisons to experimental data in [14][15][16] have shown that the logarithmic formulation of 𝑠𝑠 𝑐𝑐 leads to accurate predictions of ballistic limit velocities, and in [17] it is observed that the accuracy of the analytical predictions is at least comparable to the accuracy of numerical simulation results. In the study [18], four ductile hole enlargement models have been compared for their ability to predict ballistic limits of aluminium plates impacted by 7.62 mm armour piercing bullets (APM2 bullets) at normal incidence.…”
Section: Introductionmentioning
confidence: 93%
“…This definition for ballistically equivalent targets was validated by finite element simulations for aluminium and steel targets in [20] and is discussed in the next section. Here it should be mentioned that the cavitation pressure needed for steady cylindrical cavity expansion under plane-strain conditions [4][5][6][7][8][9][10][11]21] is shown in [15], [17] and [20] to be suitable only for ballistic limit predictions under perforation conditions that are close to plane-strain (β„Ž/𝐷𝐷 β‰ˆ 3). However, the logarithmic formulation (3) is shown, by comprehensive comparisons to experimental data [14][15][16][17][18], to be accurate enough for ballistic limit predictions of many target/threat combinations and over a wide range of β„Ž/𝐷𝐷 ratios.…”
Section: Logarithmic Formulation Of the Specific Cavitation Energy 𝒔𝒔 𝒄𝒄mentioning
confidence: 99%
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“…Dynamic spherical cavity expansion theories have been widely accepted as a basic physical model underlying indentation and penetration mechanics in metallic materials [18,29]. The problem studied is that of a pressurized spherical cavity of instantaneous radius a expanding under self-similar, steadystate conditions in an infinite medium described with the constitutive framework of Section 2.…”
Section: Dynamic Spherical Cavity Expansion Modelmentioning
confidence: 99%