Perforation of a thick plate by rigid projectiles

Chen, X W; Li, Qingming

doi:10.1016/s0734-743x(02)00152-5

Cited by 41 publications

(26 citation statements)

References 35 publications

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“…3 and 4. The derived explicit formulae cover those for the normal perforation model developed earlier by the authors [14]. Predictions by those formulae are in good agreement with experimental results, as shown in Sect.…”

Section: Introductionsupporting

confidence: 82%

“…In the case of normal perforation of thick plate by rigid projectile, i.e., β = δ = 0, simple formulae can be easily deduced and are the same as those obtained previously by Chen and Li [14]. For example, Eqs.…”

Section: Normal Perforation Of Thick Plate By Rigid Projectilementioning

confidence: 66%

“…Hence, the acceleration, velocity and displacement of the projectile and the plug, i.e.,V Q , V Q and X Q , are formulated by equations (5a) (5b) and (5c) in Ref. [14], except that the constant shear resistance is replaced by…”

Section: Motion Of the Central Plugmentioning

confidence: 99%

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Oblique Perforation of Thick Metallic Plates by Rigid Projectiles

Chen

Fan

2006

Acta Mech Mech Sinica

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Oblique perforation of thick metallic plates by rigid projectiles with various nose shapes is studied in this paper. Two perforation mechanisms, i.e., the hole enlargement for a sharp projectile nose and the plugging formation for a blunt projectile nose, are considered in the proposed analytical model. It is shown that the perforation of a thick plate is dominated by several non-dimensional numbers, i.e., the impact function, the geometry function of projectile, the non-dimensional thickness of target and the impact obliquity. Explicit formulae are obtained to predict the ballistic limit, residual velocity and directional change for the oblique perforation of thick metallic plates. The proposed model is able to predict the critical condition for the occurrence of ricochet. The proposed model is validated by comparing the predictions with other existing models and independent experimental data.

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Section: Introductionsupporting

confidence: 82%

Section: Normal Perforation Of Thick Plate By Rigid Projectilementioning

confidence: 66%

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Oblique Perforation of Thick Metallic Plates by Rigid Projectiles

Chen

Fan

2006

Acta Mech Mech Sinica

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“…Backman et al [7] have revisited the perforation of projectiles into target and proposed an analytical model for ballistic velocities based on damage mechanisms. Chen et al [8] have compared two analytical models of ballistic curves and emphasize that the models of Forrestal et al [9] and Chen et al [10] are only applicable to the perforation of ductile metal plates by rigid sharp-nose projectiles. The petaling failure mode of circular plates under explosive and impact loading was developed by Wierzbicki [11], where the total energy absorbed by the system, the number of petals and the final deformed shape of the plate were determined as a function of the flow stress and the thickness of the plate as well as the parameters of the external loading.…”

Section: Introductionmentioning

confidence: 99%

Influence of projectile shape on dynamic behavior of steel sheet subjected to impact and perforation

Kpenyigba¹,

Jankowiak

Rusinek³

et al. 2013

Thin-Walled Structures

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. a b s t r a c tThe paper describes a work focused on the process of perforation of steel sheet. Experimental, analytical and numerical investigations have been carried out to analyze in details the perforation process. Based on these approaches, the ballistic properties of the material and the failure modes depending on the projectile nose shape (conical, blunt or hemispherical) have been studied. Different failure modes have been observed, including petaling, plug ejection and circumference necking. The special study about the number of petals has been done for different nose angles using conical shape projectiles. The complete energy balance is also reported and the absorbed energy by the steel sheet has been obtained by measuring initial and residual projectile velocities. A wide range of impact velocities from 35 to 180 m/s has been covered during the tests. All the projectiles are 13 mm in diameter and the plates are 1 mm thick. Moreover, the mass ratio (projectile mass/steel sheet mass) and the ratio between the span of the steel sheet and the diameter of the projectile are constant, equal to 0.38 and 3.85, respectively.

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“…The penetration event of a rigid-rod into a low-strength target has been extensively studied during the last decades due to its application in a wide range of research fields: mechanics of indentation and penetration [1,5,30]; soil mechanics [2,35]; prediction of the behavior of piles [19,27,31]; mechanical characterization of materials [8,32]; and nuclear structural engineering [4], among others. Mathematically, this event has been modeled by the expansion of a pressurized spherical cavity in an unbounded elasto-plastic medium [25].…”

Section: Introductionmentioning

confidence: 99%

An engineering model for the penetration of a rigid-rod into a Cowper–Symonds low-strength material

Buchely

Maranon

2015

Acta Mech

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The impact of a rigid-rod into a low-strength target is an ubiquitous research problem in many scientific and engineering fields. Typically, this impact has been modeled by the expansion of a pressurized spherical cavity in an unbounded elasto-plastic medium. In this paper, an engineering penetration model was developed using the dynamic spherical cavity expansion theory for an elasto-plastic, compressible, straindependent and strain-rate-sensitive material. The material plastic flow behavior was modeled using the CowperSymonds strength model. The engineering model was numerically solved, and its predictions were compared with results of computational finite-elements simulations performed in ANSYS/AUTODYN. Additionally, engineering and computational models were validated with experimental data using spherical-nosed, M300 steel projectiles impacting a semi-infinite Al 6061-T651 plate. Comparisons showed good agreement among engineering model results, computational model results and experimental data.

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Perforation of a thick plate by rigid projectiles

Cited by 41 publications

References 35 publications

Oblique Perforation of Thick Metallic Plates by Rigid Projectiles

Oblique Perforation of Thick Metallic Plates by Rigid Projectiles

Influence of projectile shape on dynamic behavior of steel sheet subjected to impact and perforation

An engineering model for the penetration of a rigid-rod into a Cowper–Symonds low-strength material

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