Finite element model for vibration and buckling of functionally graded sandwich beams based on a refined shear deformation theory

Vo, Thuc, Thai, Huu-Tai, Nguyen, Trung-Kien, Maheri, Alireza and Lee, Jaehong (2014) Finite element model for vibration and buckling of functionally graded sandwich beams based on a refined shear deformation theory. Engineering Structures, 64. 12 - 22. ISSN 0141-0296

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Abstract

Finite element model for vibration and buckling of functionally graded sandwich beams based on a refined shear deformation theory is presented. The core of sandwich beam is fully metal or ceramic and skins are composed of a functionally graded material across the depth. Governing equations of motion and boundary conditions are derived from the Hamilton’s principle. Effects of power-law index, span-to-height ratio, core thickness and boundary conditions on the natural frequencies, critical buckling loads and load–frequency curves of sandwich beams are discussed. Numerical results show that the above-mentioned effects play very important role on the vibration and buckling analysis of functionally graded sandwich beams.

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