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Smart Structures and Systems Volume 13, Number 1, January 2014 , pages 111-135 DOI: https://doi.org/10.12989/sss.2014.13.1.111 |
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3D buckling analysis of FGM sandwich plates under bi-axial compressive loads |
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Chih-Ping Wu and Wei-Lun Liu
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Abstract | ||
Based on the Reissner mixed variational theorem (RMVT), finite rectangular layer methods (FRLMs) are developed for the three-dimensional (3D) linear buckling analysis of simply-supported, fiber-reinforced composite material (FRCM) and functionally graded material (FGM) sandwich plates subjected to bi-axial compressive loads. In this work, the material properties of the FGM layers are assumed to obey the power-law distributions of the volume fractions of the constituents through the thickness, and the plate is divided into a number of finite rectangular layers, in which the trigonometric functions and Lagrange polynomials are used to interpolate the in- and out-of-plane variations of the field variables of each individual layer, respectively, and an h-refinement process is adopted to yield the convergent solutions. The accuracy and convergence of the RMVT-based FRLMs with various orders used for expansions of each field variables through the thickness are assessed by comparing their solutions with the exact 3D and accurate two-dimensional ones available in the literature. | ||
Key Words | ||
Reissner | ||
Address | ||
Chih-Ping Wuand Wei-Lun Liu: Department of Civil Engineering, National Cheng Kung University, Tainan 70101, Taiwan, ROC | ||