Semi-analytical mechanical and thermal buckling analyses of 2D-FGM circular plates based on the FSDT

• Published in: Mechanics of advanced materials and structures Vol. 26; no. 9; pp. 753 - 764
• Main Authors: Akbari, P., Asanjarani, A.
• Format: Journal Article
• Language: English
• Published: Taylor & Francis 03-05-2019
• Subjects: 2D Functionally Graded Material (2D-FGM); Buckling; circular plate; First-Order Shear-Deformation Theory (FSDT)
• ISSN: 1537-6494; 1537-6532
• DOI: 10.1080/15376494.2017.1410913

In the present paper, mechanical and thermal buckling analyses of two-directional functionally graded material (2D-FGM) circular plate are investigated. The motion equations have been derived based on the first-order shear deformation theory (FSDT) and power series method has been employed to solve the motion equations. Two different kinds of boundary condition including simply supported and fixed are considered. The material properties are assumed to vary in both transverse and radial directions according to power and exponential laws, respectively. Comparisons with available studies in the literature confirm the high accuracy of the current approach. The effects of geometrical parameters and 2D-FG power indices on the critical buckling load have been studied. It is shown that increase of modulus of elasticity of outer layers of plate due to higher presence of hard phase of FGM, in radius and thickness directions of the plate makes it possible to attain a more solid structure against mechanical buckling loads, while increase of coefficient of thermal expansion and coefficient of thermal conduction of outer layers of plate results in less stability against thermal buckling loads.