Effect of Explosive Reactive Armour Cover Plate on Interaction of ERA and Explosively Formed Projectile

Explosive reactive armour (ERA) is used to protect the armoured vehicles against chemical energy warheads and long-rod penetrators. ERA generally consists of an ERA sandwich and an outer steel cover to protect it from unintended initiation. Explosively formed projectiles (EFPs) are used as antiarmou...

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Bibliographic Details
Published in:Shock and vibration 2019, Vol.2019 (2019), p.1-10
Main Authors: Rasheed, Muhammad F., Raza, Ali, Wu, Cheng
Format: Article
Language:English
Subjects:
Armor
Armored vehicles
Chemical attack
Chemical energy
Computer simulation
Cover plates
Energy
Experiments
Explosive forming
Explosive plating
Explosives
Fireworks
Force and energy
Numerical analysis
Organic chemistry
Penetration
Projectiles
Thickness
Warheads
Yield stress
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Summary:Explosive reactive armour (ERA) is used to protect the armoured vehicles against chemical energy warheads and long-rod penetrators. ERA generally consists of an ERA sandwich and an outer steel cover to protect it from unintended initiation. Explosively formed projectiles (EFPs) are used as antiarmour warheads, and their use in top attack antiarmour weapons is increasing. Interaction of EFP with the ERA sandwich alone has been studied in the past. This paper studies the effect of the cover plate and its thickness on the interaction of the EFP and the ERA sandwich. Numerical simulations and experiments have been used to study the interaction. It has been found that the penetration in the target is reduced as the thickness of the cover plate increases. Moreover, the decrease in penetration is directly proportional to the thickness of the cover plate. Also it has been found that the residual EFP after penetrating the cover plate has sufficient energy to initiate the ERA sandwich. The results of the numerical simulation and the experiments are in close agreement.
ISSN:1070-9622
1875-9203
DOI:10.1155/2019/6093621