Finite element modeling of the shaped charge jet and design of the reusable perforating gun

Zhang, Zhao; Jin, Weiwei

doi:10.1007/s12182-020-00468-4

Cited by 12 publications

(3 citation statements)

References 31 publications

(30 reference statements)

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“…Mulligan and Jensen [7] focus on smoothed particle hydrodynamics (SPH) to describe and investigate physical characteristics of EFP, involving large deformation and extremely high strain rates. Similar computational topics were extensively researched by Zhang and Jin [8], Wojewódka and Witkowski [9], Pappu and Murr [10], and Baêta-Neves and Ferreira [11], focusing on aspects such as the effect of meshing, blast load intensity, constitutive modelling, and the use of alternative methods. Research studies indicate that Lagrange, Arbitrary Lagrange Euler (ALE), and Lagrange/Euler hybrid methods are used mainly in the numerical simulation of EFP forming, whereas the Lagrange mesh is used to characterize the liner.…”

Section: Introductionmentioning

confidence: 97%

Research on Numerical Simulation of Tantalum Explosively Formed Projectile Forming Driven by Detonation

Wang

et al. 2022

Shock and Vibration

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In order to study the formation characteristics of tantalum explosively formed projectile (EFP), based on LS-DYNA finite-element software, this article analyzes the influence of mesh size on tantalum EFP forming, compares the accuracy of JC constitutive parameters in different literature on the characterization of tantalum EFP forming, calculates the effective action time of detonation that drives EFP formation, and carries out experimental verification. The results show that the EFP forming velocity was less sensitive to grid size; however, the EFP shape was highly sensitive to grid size, among which the liner had the greatest influence. Besides, for the same density and different constitutive parameters, the velocity of the stabilized EFP was the same, but the change trend of velocity was different, which led to the difference in morphology. The verification test showed that a selection of appropriate JC constitutive parameters could simulate tantalum EFP forming. Finally, the effect of detonation products on EFP forming was reflected mainly in the axial acceleration and radial contraction of the tail skirt. The influence of explosives and detonation products on EFP forming can be ignored 80 μs after the charge detonates. In this work, the numerical simulation method of tantalum EFP forming was studied, which provides guidance for the design and engineering application of tantalum EFP.

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Section: Introductionmentioning

confidence: 97%

Research on Numerical Simulation of Tantalum Explosively Formed Projectile Forming Driven by Detonation

Wang

et al. 2022

Shock and Vibration

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“…Many mathematical and physical models have been created and used in specialized software [10,11]. Therefore, highly explosive combustion, the Jones-Wilkins-Leee IOP Publishing doi:10.1088/1742-6596/2647/8/082017 2 equation of state (JWL-EOS), elastic-plastic hydrodynamic analysis and Mei-Gruneisen EOS are the basic constitutive models currently used to describe the material in numerical simulations [12][13][14]. currently analyzed by various numerical methods, usually using smooth particle hydrodynamics (SPH) [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical analysis of piercing with shaped charge of armor steel

Pyka,

Bocian,

Kurzawa

et al. 2024

J. Phys.: Conf. Ser.

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The tests of resistance to dynamic impact with shaped charge (ŁK) were carried out on a homogeneous armor plate made of Armox 370T Class 1 steel, commonly used in the production of ballistic shields. The chemical composition of the steel was determined in spectrometric tests using a spark discharge spectrometer S1 MiniLab 150 by GNR INDIA and confirmed by a GDS-750-QDP glow discharge spectrometer by LECO. Composition tests confirmed the compliance of the chemical composition of the board with the EN 10029 standard for the Armox 370T grade. Numerical calculations of the considered penetration with a shaped charge were carried out in the ABAQUS program. For this purpose, geometric models were made in the Inventor program and then the geometric models were exported in the .step format to the computing environment. The Johnson-Cook (J-C) mathematical model was used for elastic-plastic materials, including plastic behavior of material. The calculations were based on numerical models separately established for individual elements of the load and cover, assuming material constants appropriate for the materials used for the transition from hybrid methods using the SPH and FEM methods.

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“…In these studies, the effects of liner shapes and liner materials on penetration performances were investigated. Zhang and Jin (2020) carried out simulation studies with shaped charge jets to determine bulge and burr heights. Xu et al (2020) presented a comparative study of penetration performances of conical shaped charge and hypervelocity shaped charge into concrete target with experimental and numerical studies.…”

Section: Introductionmentioning

confidence: 99%

Effect of fragment impact on shaped charge jet formation and penetration into steel target

Hafizoglu

Konokman

Kesemen

et al. 2022

WJE

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Purpose This paper aims to investigate the effects of fragment impacts to shaped charge warheads in terms of shaped charge jet formation geometries and penetration performances. Design/methodology/approach In experimental process, a fragment was accelerated to a shaped charge warhead by means of a powder gun to a velocity more than 1,000 m/s, and this impact led to conical damage in the explosive of the warhead. Deformation on the warhead was visualized using X-ray technique to observe holes generated during fragment impact. Penetration test was performed against AISI 1040 steel plates with the damaged shaped charge warhead. Penetration performance of shaped charge jet, which deviated from the symmetry axis, was simulated by using SPEED software with 3-D Eulerian method to validate the numerical modelling method by comparing penetration test and simulation results of damaged warhead. Findings Simulation and test results showed good correlation for the warhead in terms of penetration depth and hole geometry at the impact surface of steel plates. In addition, the effects of the numbers and the geometries of fragment holes on shaped charge jet penetration performances were investigated with validated numerical methods. Simulation results showed that the increase in the number of fragment holes in the explosive of the warhead led to particulation of shaped charge jet that diminished penetration depth in the target plate. Additionally, simulation results also showed that the fragment hole geometry in the explosive after different fragment impact angles affected the amount of jet deviation from the symmetry axis as well as penetration depth in the target plate. Practical implications The results obtained from the current study revealed that fragment impact angle and different number of fragment impact reduced the penetration performance of shaped charge warhead by influencing the symmetry of shaped charge jet negatively. Originality/value The current study fulfils the need to investigate how fragment impact on the shaped charge warhead affect the formation symmetry of shaped charge jet as well as penetration performance by experimental and numerical methods. Penetration performance result of asymmetric jet is compared by experimental and numerical studies. A detailed methodology on numerically modelling of the effect of fragment impact angle and number of fragment impact on shaped charge jet performance is given in this study.

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Finite element modeling of the shaped charge jet and design of the reusable perforating gun

Cited by 12 publications

References 31 publications

Research on Numerical Simulation of Tantalum Explosively Formed Projectile Forming Driven by Detonation

Research on Numerical Simulation of Tantalum Explosively Formed Projectile Forming Driven by Detonation

Experimental and numerical analysis of piercing with shaped charge of armor steel

Effect of fragment impact on shaped charge jet formation and penetration into steel target

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