Nonlinear thermomechanical buckling and post-buckling response of porous FGM plates using Reddy's HSDT

作者：Pham Hong Cong; Trinh Minh Chien; Nguyen Dinh Khoa; Nguyen Dinh Duc^*

来源：Aerospace Science and Technology, 2018, 77: 419-428.

DOI：10.1016/j.ast.2018.03.020

• Porous functionally graded materials
• Nonlinear thermomechanical analysis
• Buckling and post-buckling
• Reddy's higher order shear deformation theory
• Elastic foundations
• Thermal environment

This work presents an analytical approach to investigate buckling and post-buckling behavior of FGM plate with porosities resting on elastic foundations and subjected to mechanical, thermal and thermomechanical loads. The formulations are based on Reddy's higher-order shear deformation plate theory taking into consideration Von Karman nonlinearity, initial geometrical imperfections, and Pasternak type of elastic foundations. By applying Galerkin method, closed-form relations of buckling loads and post-buckling equilibrium paths for simply supported plates are determined. Numerical results are carried out to show the effects of porosity distribution characteristics (Porosity-I and Porosity-II), geometrical parameters, material properties and elastic foundations on the mechanical, thermal and thermomechanical buckling loads and post-buckling resistance capacity of the porous FGM plates.

• 出版日期2018-6