Investigate the effects of magnetic fields on the penetration ability of a shaped charge jet at different standoffs

Ma, Bin; Huang, Zhengxiang; Guan, Zhongwei; Jia, Xin; Zu, Xudong

doi:10.1016/j.dt.2020.09.013

Cited by 5 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the heating up of shaped charge technology, the protective armor is forced to develop rapidly. The reactive armor [2], electromagnetic armor [3,4], ceramic armor [5], rubber armor [6,7] and liquid armor [8] have emerged.…”

Section: Introductionmentioning

confidence: 99%

Investigation on anti-penetration capability of water filled aluminum alloy cell structure to the shaped charge jet

Zhao¹,

Zhang²

2022

Funct. Compos. Struct.

View full text Add to dashboard Cite

Passive protective armor is reliable and cheap, and is favored by many armored weapons and equipment. However, reports on metal-liquid composite armor are not sufficient and systematic. Based on the shaped charge jet (SCJ), the anti-penetration capabilities of water filled aluminum alloy cell structure were studied. The hourglass cell structure (HCS) was designed according to the shock wave propagation characteristics in liquid, and the expansion-convergence cell structure (E-CCS) was derived. Based on the virtual origin theory, the residual tip velocity of jet after SCJ penetrated the cell structure was calculated. According to the theory of supersonic disturbance propagation, the Mach cone half angle of SCJ shock wave propagation in liquid was defined and corrected. The propagation and reflection behavior of shock wave were discussed to analysis the radial convergence of liquid. Via the Van Leer Arbitrary Lagrangian Euler finite element simulation model verified by experiments, the simulation studies of SCJ penetrated the circular cell structure (CCS), HCS, E-CCS and convergence/expansion multi-cell structure were performed. The results show that HCS has better effect of interfering with SCJ than that of CCS and E-CCS. An important discovery is that when the liquid composite multi-cell structure is penetrated by SCJ, the attacked cell will not affect other cells due to the shock wave has been trapped in a single cell.

show abstract

Section: Introductionmentioning

confidence: 99%

Investigation on anti-penetration capability of water filled aluminum alloy cell structure to the shaped charge jet

Zhao¹,

Zhang²

2022

Funct. Compos. Struct.

View full text Add to dashboard Cite

show abstract

“…Ma et al [18] carried out experiments on the penetration of shaped charges into a target in the presence of a magnetic field and found that the jet was easy to break and less stable at higher blast heights, while the magnetic field improved the stability of the jet and increased the depth of penetration of the shaped charge into a steel target. The depth of penetration by a 56 mm caliber shaped-charge structure increased by 77%, 72%, and 75% at blast heights of 490, 650, and 800 mm, respectively.…”

Section: Introductionmentioning

confidence: 99%

Similarity Law Study of Shaped Charges Penetrating a Concrete Target

Zhang¹,

Zhang

Zhao

et al. 2022

Buildings

View full text Add to dashboard Cite

In order to study the similarity law of penetration of concrete targets by shaped charges, penetration tests of concrete targets with different sizes of shaped-charge jets were carried out, and the prototype and the model projectiles met the similarity law with a simulation ratio of 1:1.5. LS-DYNA finite element software was used to simulate the tests, and the accuracy of the ALE algorithm, fluid–solid coupling algorithm, material model, equation of state, and corresponding material parameters was verified. Numerical simulations were further conducted for the different types of shaped-charge jets (jets, rod jets, and explosively formed projectiles) formed by different liner angles penetrating into the concrete target, and the results show that the shaped-charge jets basically meet the similarity law when penetrating concrete targets.

show abstract

Effect of explosives charges types on the jet characteristics, penetration performance and fragmentation patterns of shaped charges

Elshenawy,

Abdo,

Elbeih

2024

Sci Rep

View full text Add to dashboard Cite

Different explosive materials have been studied numerically and experimentally to assess the efficiency of a small diameter shaped charge in terms of produced jet characteristics and penetration depth into RHA steel targets. 26 different explosives have been simulated numerically using Autodyn hydrocode, whereas recommended explosives have been loaded into small diameter shaped charges by pressing technique and tested by static firing against RHA targets in order to validate the numerical calculations. The numerical analysis has presented an intensive global view about the variation of the shaped charge jets as a potential of the loaded explosive charge efficiencies. A successful trial has been performed to measure the shaped charge jet velocity using detonation velocity VOD 812 apparatus, where its measured value was only 3.6% different from the numerical one for HMX-V5 explosive. Besides, TITAN (L3) flash X-ray radiograph has also been implemented to explore the jet profile using the same explosive type and to measure its jet tip velocity, which has only 2.1% different from that estimated numerically. Extensive fragmentation analysis has been presented, which showed increase in both the fragment number and the fragment speed when the used explosive charge is of high detonation velocity. CL-20 explosive exhibited the largest jet tip velocity and its scaled collapse velocity was found to be 140% of TNT explosive. The calculated average fragment speed has been validated and the measured fragment speed has only 2.3% difference when compared to the SPH calculations.

show abstract

Investigate the effects of magnetic fields on the penetration ability of a shaped charge jet at different standoffs

Cited by 5 publications

References 14 publications

Investigation on anti-penetration capability of water filled aluminum alloy cell structure to the shaped charge jet

Investigation on anti-penetration capability of water filled aluminum alloy cell structure to the shaped charge jet

Similarity Law Study of Shaped Charges Penetrating a Concrete Target

Effect of explosives charges types on the jet characteristics, penetration performance and fragmentation patterns of shaped charges

Contact Info

Product

Resources

About