Response and closure to: A comment on “Constant deceleration approach for the penetration analysis of rigid projectiles into concrete targets: Revisited” by D.Z. Yankelevsky and V.R. Feldgun,Int. J. Prot. Struct.,pp. 1–18 (2020)

Abstract

The purpose of this discussion and closure is to address the comments presented by Rosenberg, Dekel, and Kositski on our paper (Yankelevsky and Feldgun). Our paper aimed at revisiting the constant deceleration approach for the penetration analysis of rigid projectiles into concrete. Their comments claim for inaccuracies and misleading statements that are responded in our present discussion. We clarify that the constant deceleration approach cannot represent the penetration in concrete. We discuss their comments and highlight their inaccuracies and incorrect statements and point out at the weaknesses and limitations of the constant deceleration approach. We hope that our clarifications and discussion will help to improve the suggested constant deceleration approach, enhance the awareness to its limitations, and direct to approaches that do consider the variable deceleration time history of the projectile motion in concrete.