&lt;title&gt;Penetration of particulated shaped-charge jet into water&lt;/title&gt;

et al. 2019

Materials

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.

Section: Introductionmentioning

confidence: 99%

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

Wei²,

et al. 2019

Materials

“…White and Wahll [ 16 ] studied the penetration of a jet in a liquid-filled hermetic structure and found that liquid can interfere with jet stability. Lee [ 17 ] explored the penetration process of jet particles in water through high-speed photography and X-ray experiments. Held [18] modified Szendrei equations and obtained the reaming equations of jet penetration in water through high spatial and temporal resolution and profile streak technology.…”

Section: Introductionmentioning

confidence: 99%

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

Guo

Lat. Am. j. solids struct.

et al. 2018

On the basis of visual origin, shock wave reflection, and jet interference theories, this study aims to (1) divide the process of jet penetration into a hermetic single-cell structure into six parts, (2) establish a theoretical model of a single-cell structure interacting with a jet during its penetration into a structure, and (3) obtain the time expressions of a hermetic single-cell structure interfering with a jet. A residual penetration experiment is conducted to verify the accuracy of the model.

“…When jet is much less compressible than the target, the penetration of the jet is strongly affected by the compressibility of the target [2][3]. The incompressible Hydrodynamic Penetration theory over predicts the penetration of jets into water [4,5]. From simulations it is predicted that jet tip velocities of copper remains same for jet formation and penetration in air [6].…”

Section: Introductionmentioning

confidence: 99%

Penetration Performance of Shaped Charge Jets Using Insensitive Munition: Simulative and Experimental Studies

Ahmed¹,

Malik

et al. 2015

AMR

The simulation and experimental studies of the Jets obtained from different conical liners from a charge having 56mm-diameter is presented in this paper. An OFHC copper liner of thickness 1 mm and 54 mm-diameters is used for jet formation analysis. Charge ignition is made by using Point detonation method. The simulation results are obtained from Ansysis Autodyn 2-D hydrocode. Experiments are conducted for a charge having 600 conical liner. Flash X-ray Radiography is used for image capturing. The performance capacity of standard shaped charge is predicted by its penetration against steel target. It is observed that kinetic energy of the jet decreases as angle increases, also total energy of the explosive increases and hence the Ratio of the K.E of the jet to the total energy of the explosive decreases as the angle increases. Simulation results are compared with the experimental results. It is observed that simulation results are in favorable agreement within acceptable range of error with the experimental results.