Explosively Formed Projectile Soft-recovery Force Analysis

Abstract

To investigate the influence of liner material, charge diameter and standoff on explosively formed projectile (EFP) penetrating into multi-layer targets, a large number of experiments were performed and the experimental data on crater diameter, hole diameter, crater depth and penetration depth were obtained. Meanwhile, the numerical simulation have been done to study the formation and penetration processes of all the EFP with AUTODYN software. The numerical results of penetration depth are in good agreement with the experimental ones. The results indicate that the optimal liner material of EFP to achieve a larger penetration hole diameter and depth are aluminum and copper, respectively.

Microstructure Evolution and Deformation Mechanism of Tantalum–Tungsten Alloy Liner under Ultra-High Strain Rate by Explosive Detonation

“…The EFP should be quenched in a sufficiently short time to avoid microstructure changes caused by delayed quenching, in consideration of the high temperature in the projectile. Due to the extremely high flight speed, conventional recovery methods make it difficult to safely decelerate and non-destructively recover the EFP [ 24 ]. Such a method as water recovery may easily lead to further plastic deformation or even fracture and fragmentation of the projectile during the penetration process.…”

Evaluation of a novel integrated laser fuze receiving system

“…However, since the space of conventional ammunition laser fuze optical receiver system is limited, it is difficult to arrange the buffer isolation system to reduce the transmission overload. [12][13][14][15] In order to improve the beam shaping quality of the receiving system by reducing the plastic deformation caused by high overload, a method of buffering vibration isolation for laser fuze optical receiving system is presented in this article. Integration technology of receiving focusing lens, narrowband filter, and outer cylinder is studied.…”