DYMAT 2009
Volume 2, 2009
DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
Page(s) 1715 - 1721
Section Numerical Simulations
Published online 15 September 2009
DYMAT 2009 (2009) 1715-1721
DOI: 10.1051/dymat/2009242

Experimental & numerical studies on ballistic impact of armour steel by armour piercing projectiles

A. Banerjee and N. Nayak

Proof & Experimental Establishment, Defence Research & Development Organisation, Chandipur, 756025 Balasore, India

Published online: 15 September 2009

Ballistic impact response of 40 mm thick Rolled Homogenous Armor (RHA) when impacted by two types of armor piercing (AP) projectiles of different shape and metallurgy has been reported in this paper. Armor perforation by plugging was observed when 30 mm triple conical nosed AP projectile was impacted above the ballistic limit (BL), whereas a petalling mode of failure for same armor was observed when impacted with a 40 mm ogive nosed projectile. Optical microscopic study on impacted RHA specimen showed presence of adiabatic shear bands for the former whereas grain elongation and ductile tearing mode of fracture in the latter. Numerical simulation of the plugging failure of 40 mm RHA impacted by 30 mm AP shot was attempted with the help of commercial FE code ANSYS-LS DYNA using plastic kinematic hardening material model. The numerical analysis approach was found to be promising for prediction of ballistic impact response of armours with reliable degree of accuracy and can supplement the time consuming and costly dynamic experiments.

© EDP Sciences 2009