Effect of Material Gradient on Stresses of FGM Rotating Thick-Walled Cylindrical Pressure Vessel with Longitudinal Variation of Properties under Non-Uniform Internal and External Pressure

摘要: Received 9 September 2015 Accepted 2 July 2016 Available online 15 The present paper provides a semi-analytical solution to obtain the displacements and stresses in functionally graded material (FGM) rotating thick cylindrical shell with clamped ends under non-uniform pressure. Material properties of cylinder are assumed change along axial direction according power law form. It is also that Poisson’s ratio constant. Given existence shear stress due pressure changes direction, governing equations obtained based on first-order deformation theory (FSDT). These form set general differential variable coefficients. FG divided into n homogenous disks, sets constant coefficients obtained. this equations, applying boundary conditions continuity between layers, yields stresses. problem was solved, using finite element method (FEM), results which were compared those multilayered (MLM). Finally, some numerical presented study effects applied pressure, non-homogeneity index, index FGM mechanical behavior shell.