Title:
Response of Reinforced Concrete Columns against Hypervelocity Impacts by EFPs
Author(s):
Alex Remennikov and Edward Chern Jinn Gan
Publication:
Symposium Paper
Volume:
347
Issue:
Appears on pages(s):
138-154
Keywords:
explosively formed projectiles, improvised explosive devices, steel jacketing, terminal ballistic, Ansys, smooth particle hydrodynamics
DOI:
10.14359/51732662
Date:
3/1/2021
Abstract:
Explosively formed projectiles (EFP) are one of the most severe explosive and impact loading threats for
civil infrastructure and military vehicles. EFP warheads are commonly found in conventional anti-tank weapons. They
are also regularly used by insurgent forces against armoured vehicles in conflict-affected countries. The energy of
EFPs is significantly greater than that of large calibre ammunition, such that a threat is posed to the occupants of
armoured vehicles both by perforation and spalling of the armour. This paper aims to present new experimental results
of the hypervelocity impact of EFPs on reinforced concrete (RC) columns to demonstrate the vulnerability of
infrastructure to EFP improvised explosive devices (EFP-IEDs). As a possible mitigation measure of threat against
EFPs, an RC column was retrofitted with a steel-jacket. The ability of a steel-jacket to minimise RC column damage
was evaluated where it was found to minimise damage to the RC column and contain concrete fragments. Threedimensional
numerical simulations were performed to elucidate the different stages of EFP interaction with the RC
columns. No previously published results on the EFP terminal ballistic performance of RC columns have been found
in the open literature.