Earthquakes and Structures

Volume 17, Number 1, 2019, pages 31-37

DOI: 10.12989/eas.2019.17.1.031

Numerical analysis for free vibration of functionally graded beams using an original HSDBT

Abdelkader Sahouane , Lazreg Hadji , Mohamed Bourada

Abstract

This work presents a free vibration analysis of functionally graded beams by employing an original high order shear deformation theory (HSDBT). This theory use only three unknowns, but it satisfies the stress free boundary conditions on the top and bottom surfaces of the beam without requiring any shear correction factors. The mechanical properties of the beam are assumed to vary continuously in the thickness direction by a simple power-law distribution in terms of the volume fractions of the constituents. In order to investigate the free vibration response, the equations of motion for the dynamic analysis are determined via the Hamilton

Key Words

free vibration; functionally graded materials; Hamilton

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