Failure behaviour of concrete, subjected to high dynamic loading of new spiral projectile

Abstract

A new spiral warhead structure which makes concrete failure by self-rotation is proposed. Concrete dynamic response when subjected to the oval and new proposed spiral projectile with vertical and oblique-angle (from 60° to 70°) impacts of different velocities is studied numerically. The data relating projectile residual velocity with different rotation angles and groove depths is plotted and interpreted when concrete target subjected to the impact loading ranging from 700 m/s ∼ 1000 m/s. The rotational angular velocity vs time curves for different working condition are also obtained.