Influence of porosity distribution on free vibration and buckling analysis of multi-directional functionally graded sandwich plates. (1st January 2022)

• Record Type: Journal Article
• Authors: Kumar Sah, Supen; Ghosh, Anup
• Is Part Of: Composite structures. Volume 279(2022)
• Publication Date: 2022-01-01
• Subjects: Vibration -- Buckling -- FGM sandwich plate -- Porosity distribution -- Multi-directional FGM -- Power law; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2021.114795
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: In this article, the free vibration and buckling of multi-directional porous FGM sandwich plates are investigated. The material properties of FGM sandwich plates are assumed to be varying continuously in the longitudinal and transverse direction. The material properties are evaluated based on Voigt's micro-mechanical model considering power law distribution method with arbitrary power index. Equilibrium equations for the vibration and buckling analysis of porous multi-directional FGM sandwich plate are obtained based on sinusoidal shear deformation theory. Analytical solution for simply supported multi-directional porous FGM sandwich plate is carried out using Navier's solution technique. The FGM sandwich plate considered in this work has a homogeneous ceramic core and two functionally graded face sheets. To incorporate porosity in the FGM face sheet, even, uneven, logarithmic uneven, linear uneven, and sinusoidal uneven porosity distribution models are considered and analyzed. Influence of volume fraction index in the longitudinal and transverse direction, layer thickness, porosity models, porosity coefficient, and geometrical parameter over natural frequency and critical buckling load of multi-directional FGM sandwich plate is investigated.