Effect of external magnetic fields on shaped-charge operation

Shvetsov, G. A.; Matrosov, A. D.; Федоров, С. В.; Бабкин, А. В.; Ladov, S. V.

doi:10.1016/j.ijimpeng.2010.10.024

“…Multi-material liners were studied numerically in [48] and it was suggested that they can be utilized for military purposes or in well perforation. The effect of a magnetic field on the penetration of a magnetized liner was analyzed in [49]. Jet penetration was reduced in the presence of an axial magnetic field in the liner just before the shot, and a transverse field in the conducting target.…”

Section: Materials For the Liner Of Shaped Chargementioning

confidence: 99%

A Review of Shaped Charge Variables for its Optimum Performance

Khalid

¹

,

Hussain

²

,

Abbas³

2019

Eng. Technol. Appl. Sci. Res.

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Shaped charge is a device for focusing the chemical energy of explosives to a particular point or line for penetration or cutting purpose respectively. They are used for the penetration or cutting of various types of targets on land, water, underground, underwater, or air. Their shape is either conical or linear and consists of explosive, casing and liner. The liner is bent towards the central axis producing a thin hypervelocity jet by the energy released as a result of the explosive detonation. This jet is utilized against the target. Shaped charges can perforate or penetrate targets like aircrafts, ships, submarines, armored vehicles, battle tanks, and bunkers. This paper presents a detailed review of analytical works, computer simulations, and experimental results related to the liner. Among modern diagnostic techniques flash x-rays, radiography is most used in the experiments performed in the last 40 years. Powder metallurgy, which started in the late twentieth century raised the efficiency of shaped charges to new altitudes. The efficiency of the shaped charge depends on numerous factors such as explosive’s type, liner’s material, geometry and metallurgy, manufacturing technique, and casing thickness. Factors concerning the liner’s material, metallurgical advancements, and geometry are discussed chronologically and in detail.

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“…In addition, the penetration performance of shaped charge jet can also be affected by internal factors and external intervention factors. Literature [ 8 , 9 , 10 , 11 ] studied the influence of the electromagnetic effect on the penetration performance of the SCJ. By controlling the direction of the electromagnetic field, the penetration ability of the SCJ can be improved or reduced.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, the proposed numerical simulation method improves the definition of the numerical model of warhead based on a real projectile, which is helpful to accurately reproduce the formation and target penetration process of a shaped charge jet. Shvetsov et al [ 8 ] have shown through theoretical research and calculations that SCJ can significantly reduce the penetration depth of the focused jet on the target plate under the action of a magnetic field. Ma et al [ 9 , 10 , 11 ] analyzed the acceleration mechanism of SCJ under the action of an electromagnetic field by establishing a theoretical model and verified through experiments that the application of a magnetic field in the inertial stretching stage of SCJ can improve the stability of the jet, thereby improving the DOP of the jet.…”

Section: Introductionmentioning

confidence: 99%

Study on Penetration Performance of Rear Shaped Charge Warhead

Du

¹

,

He

²

,

Liu

³

et al. 2021

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In guided munitions, the shaped charge jet (SCJ) warhead is located behind the simulation compartment (including the control cabin, the steering gear cabin, and the guidance cabin). Therefore, the order of penetration of the SCJ is the simulation cabin and the target. To study the penetration performance of the SCJ to the target plate, the numerical simulation method is used to study the penetration performance of the designed warhead for the steel target at different standoffs, and the depth of penetration (DOP) at the best standoff is obtained, that is, the DOP of the steel target is about 128 mm. Additionally, the penetration performance of the SCJ warhead to target is studied by numerical simulation and experimental verification. Numerical simulation and experimental results show that the DOP of the SCJ warhead to the steel target is 50 mm without the simulation cabin, and about 30 mm with the simulation cabin. The results show that the penetration performance of SCJ is greatly weakened under the condition of non-optimal standoff, but the rear shaped charge warhead still has a strong penetration performance after completing the penetration of the simulated cabin.

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“…For example, the penetration performance of SCJs can be improved or reduced by the control of the electromagnetic field on SCJs [7]. Shvetsov et al [8] analyzed the effect of electromagnetic fields on the penetration of SCJs by theoretical analysis. e results show that the penetration effect of the SCJs is weakened under the action of the electromagnetic field.…”

Section: Introductionmentioning

confidence: 99%

“…According to the research in literature, researchers have studied the penetration performance of the SCJs from different aspects, including the shaping and penetration mechanism of the SCJs [4][5][6], the influence of electromagnetic characteristics on the penetration performance of the SCJs [7][8][9][10][11], the influence of target material on the penetration ability of the SCJs [3,[14][15][16][17][18], and the application of reactive materials in the liner [19][20][21][22]. Researchers have done a lot of research in improving or offsetting the penetration ability of the SCJs.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Experimental Study on Shaped Charge Warhead of Guided Ammunition

Ma

¹

,

He

²

2021

Shock and Vibration

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To study the jet penetration capability of shaped charge warhead of guided ammunition, a variable cone angle-shaped charge liner was designed. LS-DYNA software is used to simulate the penetration capability of shaped charge warhead with three different metal materials (copper, steel, and aluminum). Numerical simulation results show that the velocity of the shaped charge jet formed by the three kinds of materials is v aluminum > v copper > v steel , and the residual velocity after penetration is V steel > V aluminum > V copper , the time when the jet starts to break is tcopper > tsteel > taluminum, and the penetration completion time is Tcopper < Taluminum < Tsteel; therefore, according to the numerical simulation results, copper was selected as the liner material, and the principle prototype is made for the experiment. The results of numerical simulation and experiment show that the shaped charge warhead with copper shaped charge liner has good penetration ability and after-effect damage ability to steel target after penetrating the guidance section, steering gear section, and control section.

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Effect of external magnetic fields on shaped-charge operation

Cited by 18 publications

References 8 publications

A Review of Shaped Charge Variables for its Optimum Performance

A Review of Shaped Charge Variables for its Optimum Performance

Study on Penetration Performance of Rear Shaped Charge Warhead

Numerical Simulation and Experimental Study on Shaped Charge Warhead of Guided Ammunition

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