TY - JOUR N2 - 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 power-law 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 power-law 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. L1 - http://www.czasopisma.pan.pl/Content/84914/mainfile.pdf L2 - http://www.czasopisma.pan.pl/Content/84914 PY - 2014 IS - No 3 EP - 482 DO - 10.2478/meceng-2014-0027 KW - large-amplitude vibration KW - functionally graded KW - Euler-Bernoulli beam theory KW - finite element method KW - boundary conditions A1 - Javid, Mehdi A1 - Hemmatnezhad, Milad PB - Polish Academy of Sciences, Committee on Machine Building VL - vol. 61 DA - 2014 T1 - Finite element formulation for the large-amplitude vibrations of FG beams SP - 469 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/84914 T2 - Archive of Mechanical Engineering ER -