Testing and modeling blast loading of a sandwich structure cored with a bio-inspired (balanus) core. (June 2022)

• Record Type: Journal Article
• Authors: Tuzgel, Firat; Akbulut, Emine Fulya; Guzel, Erkan; Yucesoy, Atacan; Sahin, Selim; Tasdemirci, Alper; Guden, Mustafa
• Is Part Of: Thin-walled structures. Volume 175(2022)
• Publication Date: 2022-06
• Subjects: Bio-inspired metallic core -- Sandwich structures -- Crushing behavior -- Blast loading; Thin-walled structures -- Periodicals; 690.1
• DOI: 10.1016/j.tws.2022.109185
• Languages: English
• ISSNs: 0263-8231

Abstract

Abstract: The blast loading response of a sandwich structure consisted of bio-inspired (balanus) cores/units was investigated experimentally and numerically. A Direct Pressure Pulse (DPP) set-up was used to impose a blast-like loading. The equivalent blast conditions corresponding to the used impact velocities were implemented in the models. A benchmark study was performed by using three different methods namely pure Lagrangian, Arbitrary Lagrangian Eulerian, and hybrid. Dynamic crushing behavior was analyzed and exhibited a higher specific energy absorption capacity than its constituents (core and shell). Among the core configurations, all-front configuration was found the most efficient configuration regarding the specific energy absorption. Highlights: The blast loading response of a sandwich structure was investigated. The bio-inspired geometry exhibits a higher specific energy absorption capacity. All-front configuration was found the most efficient configuration regarding SAE.