Abstract
AbstractIn this paper, free vibrational behavior of pre-twisted sandwich conical shells made of functionally graded material (FGM) core and homogeneous facings under rotational motion is investigated numerically. Physical properties of the FGM core are specified to vary along the thickness direction of the shell as per volume fractions of FGM constituents following a simple power law. A finite element-based mathematical model that includes the transverse shear deformation according to first-order shear deformation theory (FSDT) is employed to capture the structural behavior of the FGM sandwich conical shell. Governing equation of vibrating sandwich conical shell is deduced using Lagrange’s equation of motion considering moderate rotational speed. The effects of material property graded index, twist angle, core-to-facings thickness ratio, and non-dimensional rotational speed on the fundamental frequency of sandwich conical shell have been investigated.KeywordsVibrational behaviorSandwichFGMConical shellFinite element
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