Simulation study on the anti-penetration performance and energy absorption characteristics of honeycomb aluminum sandwich structure. (15th April 2023)

• Record Type: Journal Article
• Authors: Cheng, Yu; Ren, Kai; Fu, Jianping; Yin, Likui; Yang, Rui; Yuan, Hao; Zhao, Taiyong; Chen, Zhigang
• Is Part Of: Composite structures. Volume 310(2023)
• Publication Date: 2023-04-15
• Subjects: Sandwich panel -- Interaction -- Projectile penetration -- Anti-penetration performance -- Energy absorption; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2023.116776
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: This work studied the anti-penetration performance and energy absorption characteristics of the honeycomb aluminum core structure. Tests of penetrating depth were conducted. The response and deformation resistance of the aluminum sandwich structure with a regular hexagonal honeycomb were studied through numerical simulation. The effect of the face/back plate thickness ratio and the shape of the core layer unit on the performance of the aluminum sandwich structure with a regular hexagonal honeycomb were compared and analyzed with a theoretical model of equivalent target calculation. Based on the results, the aluminum sandwich structure with a regular hexagonal honeycomb has the strongest anti-penetration capability when the thickness ratio of the face/back plate is set to 2.5:1. In terms of the energy consumption, the Arrow and concave hexagonal honeycomb aluminum sandwich structures are 14.7% and 25.9%, respectively, than the aluminum sandwich structure with a regular hexagonal honeycomb. The typical hierarchical honeycomb aluminum sandwich structure has better energy absorption characteristics than the aluminum sandwich structure with a regular hexagonal honeycomb. Therefore, the anti-penetration performance of the honeycomb aluminum sandwich structure can be improved by adjusting the thickness ratio of the face/back plate and changing the shape of the core layer. The research results are of great significance in guiding the design of the honeycomb aluminum sandwich structure.