Theoretical Analysis of Residual Head Velocity after the Jet Penetrating the Multi-layer Metal-Liquid Composite Structure

Zhao, Changfang; Ren, Jie; Kuai, Tengfei; Zhou, Zhitan; Zhang, Kebin; Zu, Xudong; Le, Guigao

doi:10.1088/1757-899x/711/1/012061

Cited by 3 publications

(6 citation statements)

References 5 publications

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“…The literature [8][9][10][11][12][13][14][15][16][17] had proved the anti-penetration performance of the LC4 aluminum alloy-diesel closed structure. The materials and the geometric dimensions of the structure were used by referring to them.…”

Section: Design Of Structurementioning

confidence: 99%

“…According to Ref. [8][9][10][11][12][13][14][15], d=5 mm, D=30 mm, h=12.5 mm. By calculation, mw=19.03 g, mp=17.40 g and md=7.39 g. Hence, the mass of the base is 61.22 g. By combining Eqs.…”

Section: Design Of Structurementioning

confidence: 99%

“…The composite rod jet with small head radius had a small resistance when it moved in water, whose contribution to the penetration of the target plate was significantly improved. For a closed structure composed of metal and liquid, Gao et al [8], Zhao et al [9][10][11][12][13], Shan et al [14] and Zhao et al [15] obtained the anti-jet penetration capabilities of the single cell closed structure (SLMDCS) by steady penetration theory, finite element numerical simulation and residual penetration depth experiments and other methods. The research filed included liquid properties, size effects, penetration angles and so on.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on the jet penetrated metal-diesel closed structures in condition of single-layer and multi-layer

Zhao

Zhang²,

Zhao³

2022

JMES

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For improving the protective performance of Armor, a multi-layer metal-diesel closed structure (MLMDCS) was proposed. The concept of equivalent layer number n and specific residual head velocity (SRHV) for describing the anti-jet penetration performance of single-layer metal-diesel closed structure (SLMDCS) and MLMDCS was put forward. The finite element simulation method by experimental verification was used to simulate the shaped charge jet (SCJ) penetrates the MLMDCS and SLMDCS. The simulation results show that when the equivalent layer number n (n>1) is the same, the residual head velocity of the jet through the MLMDCS is lower than that of the SLMDCS, and the time is longer than that of the SLMDCS. The energy consumption of jet in MLMDCS is more than that of in SLMDCS. The jet head becomes blunt after penetrating out the MLMDCS, but the head shape remains basically unchanged after the jet penetrates out the SLMDCS. The velocity streamline of diesel at the intersection of each layer in the MLMDCS is disordered, which forms local turbulence and disjoint phenomenon. The distribution positions of the diesel velocity streamline and pressure in the SLMDCS are basically the same. Compared with the SLMDCS, the MLMDCS has better anti-jet penetration properties, and the anti-jet penetration properties of the MLMDCS are better with the increase in the equivalent layer number. The research results provide a design reference for the new generation protective armor.

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Section: Design Of Structurementioning

confidence: 99%

Section: Design Of Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation on the jet penetrated metal-diesel closed structures in condition of single-layer and multi-layer

Zhao

Zhang²,

Zhao³

2022

JMES

Self Cite

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“…Research on liquid armor is relatively scarce. The current visible research contents are embodied in liquid properties [9], penetration theory [10] and structure type [11]. Even if there is some literature on the closed structure filled liquid, there are still shortcomings in the research.…”

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.

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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.

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“…13 Zhao et al studied the anti-jet penetration performance of the honeycomb structure filled with liquid and carried out studies on the influence of the size effect and liquid properties of the honeycomb structure. 14 However, there has been little research into the resistance to projectile penetration of ceramic-filled honeycomb sandwich structures.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of the anti-penetration performance of sandwich composite armor containing ceramic honeycomb structures filled with aluminum alloy

Zhu

Zhao

2021

Journal of Defense Modeling & Simulation

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The aim of this work was to study the anti-penetration effect of sandwich composite armor with ceramic honeycomb structures filled with aluminum alloy under the impact of high-speed projectiles. The finite element software ABAQUS was used to conduct numerical simulation research on the process of a standard 12.7-mm projectile penetrating sandwich composite armor. The armor-piercing projectile model was simplified as a rigid body. The numerical simulation models were applied to three different sandwich composite armor structures (A, B, and C), each with a total armor thickness of 25 mm. The penetration resistance of the three kinds of composite armor was studied. We obtained velocity curves for the rigid projectile penetrating the different structures. The failure forms and penetration resistance characteristics of the three composite armor structures adopted in this paper were analyzed. In addition, the velocity reduction ratio is proposed as an index to evaluate the penetration resistance performance of the armor. The simulation results revealed decreasing rates of projectile speed in the structures A, B, and C of 69.6%, 91.1%, and 100%, respectively. The third composite armor (structure C) designed here has excellent penetration resistance and can block the penetration of a high-speed (818m/s) rigid projectile. This study can provide some reference for the application of laminated armor material in anti-penetration protection structures.

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Theoretical Analysis of Residual Head Velocity after the Jet Penetrating the Multi-layer Metal-Liquid Composite Structure

Cited by 3 publications

References 5 publications

Investigation on the jet penetrated metal-diesel closed structures in condition of single-layer and multi-layer

Investigation on the jet penetrated metal-diesel closed structures in condition of single-layer and multi-layer

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

Numerical study of the anti-penetration performance of sandwich composite armor containing ceramic honeycomb structures filled with aluminum alloy

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