Objectives Warships will be attacked by missiles or shells when carrying out combat tasks. and armor piercing damage identification has certain characteristics. so it is of great significance to study this specific area. Methods Taking the stiffened plate structure which commonly exists in ships as the research object. https://www.diegojavierfares.com/amazing-price-Kicker-48CDF104-Comp-10-Down-Firing-Loaded-Subwoofer-Enclosure-special-find/