Mechanism of hermetic single-cell structure interfering with shaped charge jet

Guo, Min; Zu, Xudong; Huang, Zhengxiang; Shen, Xiaojun

doi:10.1590/1679-78254977

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…The schematic of the interaction between the SCJ and LFCS is shown in Figure 3. The basic principle [16,17] between the LFCS and the SCJ is presented as follows:…”

Section: Physics Phenomena and Principlesmentioning

confidence: 99%

“…The researchers observed that the contour of bubbles formed no smooth curve, but that wave packets and jet particles only arrived at the penetration bottom when the foregoing particles were consumed completely during penetration. Huang et al [16,17] established a mechanical model of a diesel oil-filled hermetic structure that interferes with a jet and obtained the expressions of the interfered velocity range. They also verified the theoretical model via X-ray experiments.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Liquid Parameters on Liquid-Filled Compartment Structure Defense Against Metal Jet

Wei²,

Huang

et al. 2019

Materials

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The effect of liquid parameters on the defense capability of the liquid-filled compartment structure (LFCS) of a shaped charge jet (SCJ) is quantified using dimension analysis of experiments on the reduced depth of SCJ penetration, which is disturbed via the LFCS with different liquids. The effects of three parameters, namely, liquid density, sound velocity and dynamic viscosity, on LFCS defense for SCJ are discussed quantitatively. Dynamic viscosity exerts the most important effect on LFCS disturbance of SCJ penetration, followed by liquid density. Meanwhile, sound velocity causes a negligible effect on LFCS disturbance of SCJ when the hole diameter in LFCSs are short. LFCSs offer excellent protection as they can significantly reduce the penetration capability of SCJ. Thus, LFCSs can be used as a new kind of armor for defense against SCJ.

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“…The schematic of the interaction between the SCJ and LFCS is shown in Figure 3. The basic principle [16,17] between the LFCS and the SCJ is presented as follows:…”

Section: Physics Phenomena and Principlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Liquid Parameters on Liquid-Filled Compartment Structure Defense Against Metal Jet

Wei²,

Huang

et al. 2019

Materials

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“…Guo et al considered the multiple impacts of the jet on the liquid and proposed that the liquid backflow caused by bottom reflection and cavity wall reflection interfered with the middle and rear segments of the shaped charge jet, respectively. They utilized the lateral velocity method to calculate the residual penetration depth of the jet after being disturbed by the liquid composite armor (Guo et al 2018. Zu et al analyzed the lateral migration of the disturbed jet and the lateral velocity generated by the breakup of the jet at a high standoff distance.…”

Section: Introductionmentioning

confidence: 99%

Study on cone angle of shockwave front in liquid composite protective structure

Cai,

Tan,

et al. 2024

Lat. Am. j. solids struct.

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Liquid composite armor has demonstrated excellent performance in protecting against shaped charge jets. Currently, most existing theoretical calculation models for the velocity range of the disturbed jet approximate the cone angle of the shockwave front as the Mach angle. However, indiscriminately equating the cone angle of the shockwave front with the Mach angle can lead to significant errors in the calculated velocity range of the disturbed jet. To address this issue, this study focuses on investigating the variation of the cone angle of the shockwave front within the liquid composite protective structure. Firstly, a dimensional analysis was conducted to determine the functional relationship between the cone angle of the shockwave front and relevant parameters. Then, the process of jet penetrating liquid composite protective structure was simulated by Autodyn. The results demonstrated that the normalized cone angle solely depends on the normalized diameter within the critical angle. By fitting the simulation data, the formula for calculating the cone angle of the shockwave front was derived.

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Simulation study on the influence of liquid level on anti-jet penetration ability of single-cell composite structure

Cai

Huang

Shen

et al. 2020

J. Phys.: Conf. Ser.

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The liquid composite armour produces transverse interference to the sharped charge jet through the backflow of liquid in the inner cavity, which affects the subsequent penetration ability of the jet. Within this article, a single-cell structure filled with water is take as the research target. Through numerical simulation, the process of shaped charge jet penetrating the single-cell structure at different liquid level is reproducing, and the parameters of the remaining jet after penetration, the interference of jet, and the deformation and energy absorption of shell are obtained. The results showed that the liquid level of liquid-filled single-cell structure has a significant influence on the anti-jet penetration ability of the single cell structure. When the liquid level was 60mm to 65mm, the water-filled single-cell structure has the best interference effect on the incoming shaped charge jet.

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Mechanism of hermetic single-cell structure interfering with shaped charge jet

Cited by 6 publications

References 10 publications

Effects of Liquid Parameters on Liquid-Filled Compartment Structure Defense Against Metal Jet

Effects of Liquid Parameters on Liquid-Filled Compartment Structure Defense Against Metal Jet

Study on cone angle of shockwave front in liquid composite protective structure

Simulation study on the influence of liquid level on anti-jet penetration ability of single-cell composite structure

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