Deceleration-Displacement Response for Projectiles That Penetrate Concrete Targets

Abstract

AbstractWe examined data from two sets of penetration experiments that recorded deceleration during penetration into concrete targets with compressive strengths of 23 and 39 MPa. The 76.2-mm-diameter, 13 kg projectiles contained a single-channel acceleration data recorder. We plotted deceleration versus displacement data and showed that this response could be closely approximated by a linear rise region with a depth of two projectile diameters followed by a tunnel region with constant deceleration until the projectile came to rest. A new empirical model predicts accurately the deceleration-displacement responses.KeywordsConcrete penetrationDeceleration-displacementEmpirical modelsDeceleration measurementsData modifications