%0 Journal Article %A Foroutan, M, Sharafi, Sh, Mohammadi, S %T Free Vibration Analysis of Functionally Graded Piezoelectric Material Beam by a Modified Mesh Free Method %J Journal of Solid Mechanics %V 11 %N 1 %P 144-154 %D 2019 %R 10.22034/jsm.2019.664225 %U https://sanad.iau.ir/fa/Article/908505