On the natural frequency analysis of the shear deformable aircraft wing using an FE-based multilayered FGM model

This research delves into an extensive exploration of the natural frequencies of the shear-deformable functionally graded material (FGM) aircraft wings, employing an innovative FE-based multilayered FGM model. Natural frequency analysis is pivotal in aircraft design as it influences structural stability and vibration characteristics. The model employs a power-law distribution, following the rule of mixture, to ascertain effective material properties. Realistic gradient variations are obtained for the FGM wings, which is composed of several layers with unique material compositions. The study focuses on three prevalent FGM airfoil wing profiles (NACA0009, NACA2424, and NACA4415) and examines the impact of volume fraction indices and aspect ratios on natural frequency analysis. Rigorous analyses encompass various FGM structures, such as plates, shells, and airfoils, affirming the efficiency and accuracy of the FE-based multilayered FGM model. The results indicate that the present model is efficient for analyzing complex-shaped FGM structures.