Study on Rubber Composite Armor Anti‐Shaped Charge Jet Penetration

Abstract

The process of rubber composite armor anti‐shaped charge jet (SCJ) penetration was divided into four parts based on jet deformation that occurred when the SCJ penetrated the rubber composite armor. Results on the interference speed interval, interference frequency, and surplus penetration capability of the SCJ with the rubber composite armor were derived based on the stress wave and the Kelvin‐Helmholtz instability theory. The effects of rubber layer thickness and obliquity of the armor for the composite armor anti‐SCJ penetration were studied through theoretical, X‐ray, and depth of penetration experiments. The results showed that when the obliquity was at 60° and the rubber layer thickness was in the range of 3 mm to 3.5 mm, the rubber composite armor seriously disturbed the stability of the SCJ. Thus, the rubber composite armor was found to have the best protection capability under these specifications.

Experimental and Numerical Study on a Non-Explosive Reactive Armour with the Rubber Interlayer Applied against Kinetic-Energy Penetrators—The ‘Bulging Effect’ Analysis

“…The interactions between reactive armour and shape-charge threats were described in [ 7 ], employing an analytical model. Further, the experimental investigation evaluated the influence of the target obliquity and composition on the armour protection effectiveness [ 8 ]. Whereas conclusions on the KEPs fracturing resulted from contact with an accelerated plate may be found in [ 9 , 10 , 11 ], where the residual velocity and geometry of fragments was determined after the experimental investigation.…”

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

“…H. Andreas [ 14 ] considered the rubber in a sandwich rubber composite armor as an inert explosive, which makes the surface plants swell and move, eventually disturbing the SCJ. X. D. Zu [ 15 ] explained the interference mechanism of a rubber composite armor with an SCJ based on stress wave propagation and Kelvin-Helmholtz instability. Many scholars have accepted that the strength of the ceramic armor reduces the penetration ability of the SCJ.…”

Theoretical and Experimental Study on the Effects of Impact Angle on the Performance of Kevlar Woven Fabric Rubber Composite Armor against Shaped Charge Jet Impact

“…Classical methods for increasing the protection level of tanks and armored vehicles are the application of explosive reactive armor (ERA) or bulging armor consisting of a low‐impedance interlayer (e.g., rubber) sandwiched between two metal plates 2–5. The lower protective effectiveness of the bulging armor, compared with the ERA, is compensated by lesser collateral damage 6–8. Thus, in situations similar to urban or aerial warfare in which the use of minor‐caliber shaped charge warheads should be considered, a series of composite armor and bulging armor may be preferable for lightweight vehicles, aircraft, or even aerospace equipment.…”