Considerations of Nose Shape for Thin-Walled Projectile Penetrating Double Reinforced Concrete; Journal article

摘要

The U.S. Army Research Laboratory at the Aberdeen Proving Ground, MD is interested in developing a thin-walled munition capable of perforating an urban structure and delivering a payload intact to the interior of the structure. One of the most critical design aspects of this munition is the shell casing. Its shape, thickness, and material composition must be selected such that it has sufficient structural integrity to perforate a double- reinforced concrete wall as a rigid body and to deliver a payload to the interior of the structure. A combined experimental computational approach is being used to evaluate candidate munition configurations. The goal of maximizing the payload mass delivered, with a thinner-walled and lighter casing must be balanced against the need to retain sufficient structural integrity to survive the breaching of the wall intact. In this study, various casing-wall thicknesses and nose shapes and their effects on the payload volume were considered.