%0 Journal Article
%T Thermally induced vibration of an electro-statically deflected functionally graded micro-beam considering thermo-elastic coupling effect
%J Scientia Iranica
%I Sharif University of Technology
%Z 1026-3098
%A Jafarsadeghi-pournaki, Ilgar
%A Rezazadeh, Ghader
%A Zamanzadeh, Mohammadreza
%A Shabani, Rasool
%D 2014
%\ 06/01/2014
%V 21
%N 3
%P 647-662
%! Thermally induced vibration of an electro-statically deflected functionally graded micro-beam considering thermo-elastic coupling effect
%K Thermally induced vibration
%K FGM
%K thermo-elastic coupling
%K electrostatic load
%R
%X This study investigates the dynamic response of an electrostatically deflected capacitive cantilever functionally graded (FG) micro-beam subjected to a harmonically varying thermal load, which is incited vibration due to different material properties of the beam constituents and thermo-elastic coupling effect. The FG beam is made of mixture of metal and ceramic where the material properties vary continuously through the thickness according to an exponential distribution law (E-FGM).Assuming the Euler-Bernoulli beam theory and the infinite speed of heat transportation, the equation of motion and the conventional coupled energy equation are derived. Applying Galerkin formulation and then using Rung-kutta method as an efficient numerical tool,these equations are simultaneously solved. Changing the ceramic constituent percentage of the bottom surface, five different types of FGM micro-beams are investigated and results are presented for all types.Numerical results are shown the response of a cantilever FG micro-beam subjected to a harmonically varying temperature input. Moreover, the influences of the beam ceramic constituent percentage on the stability, vibrational behavior and natural frequency are presented.
%U http://scientiairanica.sharif.edu/article_3503_d1913acbabcf6cf760b21b37240ce248.pdf