High velocity penetration of steel targets

Sorensen, Brett R.; Kimsey, Kent D.; Silsby, Graham F.; Scheffler, Daniel R.; Sherrick, Thomas M.; Rosset, William S. de

doi:10.1016/0734-743x(91)90034-d

Cited by 55 publications

(21 citation statements)

References 4 publications

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“…A non-ideal segmented-rod projectile includes not only segmented rods but also carrier tube and fillers for assembly and integrity purposes. Due to the high cost of experimental studies and the complexity of the problem, numerical modeling has become an important tool to design the segmented-rod projectiles to maximize their penetration performance.The impact velocity range used in this paper is based on previous experimental work by Sorenson et al [1] and Orphal et al [2] on non-ideal segmented-rod projectiles. Wang et al [3] compared the penetration performance of actual segmented-rod projectiles with that of monolithic rods through an experimental program in a narrow range of impact velocity.…”

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confidence: 99%

Numerical investigation of penetration performance of non-ideal segmented-rod projectiles

Aly

2008

Trans. Tianjin Univ.

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Abstract：The design of a segmented-rod projectile is often simplified into an ideal one in theoretical analysis for the convenience of modeling of its performance. But the actual performance of non-ideal segmented-rod projectiles over the impact velocity range in practical applications was rarely explored. AUTODYN numerical code is used to investigate the influence of the component design upon the penetration performance of non-ideal segmented-rod projectiles over a wide range of impact velocities, which can be used to guide the optimal design of weaponry segmented-rod projectiles.The enhanced penetration performance of segmented-rod projectiles over the traditional monolithic projectiles has been realized through experimental and numerical studies. Most of previous researches focused on ideal segmented-rod projectiles, which consist of segments only, while limited researches have been devoted to the penetration performance of non-ideal ones. A non-ideal segmented-rod projectile includes not only segmented rods but also carrier tube and fillers for assembly and integrity purposes. Due to the high cost of experimental studies and the complexity of the problem, numerical modeling has become an important tool to design the segmented-rod projectiles to maximize their penetration performance.The impact velocity range used in this paper is based on previous experimental work by Sorenson et al [1] and Orphal et al [2] on non-ideal segmented-rod projectiles. Wang et al [3] compared the penetration performance of actual segmented-rod projectiles with that of monolithic rods through an experimental program in a narrow range of impact velocity. It was found that there exists a transition impact velocity, beyond which deeper penetration is achieved by segmented-rod projectiles. These previous studies demonstrate the increased penetration performance of segmented-rod projectiles over the monolithic rods. However, the influence of the assembly components on the penetration performance of actual segmented-rod projectiles has not been studied.Numerical modeling based on AUTODYN is used in this paper to investigate the influences of design parameters on the penetration performance of non-ideal segmented-rod projectiles over a wide range of impact velocity. Numerical models of non-ideal segmented rod projectilesWang et al [3] conducted experiments to investigate the penetration of segmented-rod projectiles into semiinfinite target over an impact velocity range between 1.8 and 2.0 km/s. This particular range of impact velocity covers the transition velocity, beyond which the segmented-rod projectile over-performs the corresponding monolithic rod projectile with the same diameter and mass [3] . In this paper experimental results reported by Wang et al [3] were simulated using AUTODYN code. AUTODYN is a non-linear dynamic analysis code, which has been widely used in simulating dynamic structural responses subjected to impact and blast loads [4] . Two designs were selected for studying, segmented-rod projectile with carrier tube and ...

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confidence: 99%

Numerical investigation of penetration performance of non-ideal segmented-rod projectiles

Aly

2008

Trans. Tianjin Univ.

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“…Anderson and Walker [26] pointed out that there is pressure gradient in the region where the pressure is higher than the target strength. Later on, Anderson et al [27] investigated the target resistance under various impact velocities by curve fitting the A-T model predictions to the experimental data [28,29] for tungsten alloy long rod penetration into semi-infinite armor steel targets. It was found that R t is not a constant but a function of impact velocity when impact velocity exceeds 1.5 km/s.…”

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Analytical models for the penetration of semi-infinite targets by rigid, deformable and erosive long rods

Wen

Lü

2010

Acta Mech Sin

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A theoretical study is presented herein on the penetration of a semi-infinite target by a spherical-headed long rod for Y p > S, where Y p is the penetrator strength and S is the static target resistance. For Y p > S, depending upon initial impact velocity, there exist three types of penetration, namely, penetration by a rigid long rod, penetration by a deforming non-erosive long rod and penetration by an erosive long rod. If the impact velocity of the penetrator is higher than the hydrodynamic velocity (V H ), it will penetrate the target in an erosive mode; if the impact velocity lies between the hydrodynamic velocity (V H ) and the rigid body velocity (V R ), it will penetrate the target in a deformable mode; if the impact velocity is less than the rigid body velocity (V R ), it will penetrate the target in a rigid mode. The critical conditions for the transition among these three penetration modes are proposed. It is demonstrated that the present model predictions correlate well with the experimental observations in terms of depth of penetration (DOP) and the critical transition conditions.

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“…Sorensen et al [12] compiled data for tungsten alloy penetration into semi-infinite RHA at quarter scale, half scale and full scale. The P L versus impact velocity showed good correlation with a hyperbolic fit.…”

Section: Review Of Scale Effects For Penetration Into Steel Targetsmentioning

confidence: 99%

Scaling Effects in Penetration : A Taylor Test Approach

Cazamias

Bless

1997

J. Phys. IV France

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Taylor Tests with L/D = 5 rods (1 cm and 0.2 cm in diameter) were conducted on armor steel (RHA) at 215 to 280 m/s to examine scale effects. AUTODYN-2D calculations confirmed dimensional analysis which predicts that strain rate should scale inversely with size. Yield strengths (yd) determined from the Wilkins-Guinan formula were found to be 7 to 9% greater in the smaller specimens which is a little less than the 12% increase predicted from a logarithmic dependence of strength on strain rate. numBriques avec AUTODYN-2D ont confirm6 I'analyse dimensionelle qui prCdit une vitesse de dCformation inversement proportionelle au diamhtre. Nos rtsultats montrent que la contrainte d'tcoulement, dCtermin6e B partir de la formule de Wilkins-Guinan, est 7 h 9% plus grande pour les petits Cchantillons. c e s valeurs sont proches des 12% d'augmentation prCdits par une dtpendance logarithmique de la contrainte en fonction de la vitesse de diformation. R&urn&

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High velocity penetration of steel targets

Cited by 55 publications

References 4 publications

Numerical investigation of penetration performance of non-ideal segmented-rod projectiles

Numerical investigation of penetration performance of non-ideal segmented-rod projectiles

Analytical models for the penetration of semi-infinite targets by rigid, deformable and erosive long rods

Scaling Effects in Penetration : A Taylor Test Approach

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