Hardness and buckling strength of different material panels for a wing box structure with FE analysis

The wing box structure is made through different composite materials used in the aircraft industry due to enhanced properties. Buckling is an instability phenomenon that can in slender structures. Buckling in aircraft structures is undesirable as it alters the load path and hence the behavior of the structure and composition. Advanced wings are made up of thin-walled structures and the top skin is focused on compressive stress due to buckling volatility. This work describes finite element investigation on the buckling strength of the Al 2024T3, Glass Fiber-Reinforced Polymeric (GFRP), sandwich panels, and performance of hardness. The results showed that the sandwich panel produced a better critical load than other panels with less percentage of error. Obtained FE results matched with theoretical, but experimentally deviated slightly. Strain magnitude has increased with a small increment in load. Further, high hardness obtained in the sandwich material than others. (C) 2019 Elsevier Ltd. All rights reserved.