Finite Element formulation for the large-amplitude vibrations of FG beams
Journal Title: Archive of Mechanical Engineering - Year 2014, Vol 0, Issue 3
Abstract
On the basis of Euler-Bernoulli beam theory, the large-amplitude free vibration analysis of functionally graded beams is investigated by means of a finite element formulation. The von Karman type nonlinear strain-displacement relationship is employed where the ends of the beam are constrained to move axially. The material properties are assumed to be graded in the thickness direction according to the powerlaw and sigmoid distributions. The finite element method is employed to discretize the nonlinear governing equations, which are then solved by the direct numerical integration technique in order to obtain the nonlinear vibration frequencies of functionally graded beams with different boundary conditions. The influences of powerlaw index, vibration amplitude, beam geometrical parameters and end supports on the free vibration frequencies are studied. The present numerical results compare very well with the results available from the literature where possible.
Authors and Affiliations
Mehdi Javid, Milad Hemmatnezhad
Keywords
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- EP ID EP165758
- DOI 10.2478/meceng-2014-0027
- Views 95
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