Thermo -elastic solution of a functionally graded variable thickness rotating disk based on the third-order shear deformation theory by DQ method

A theoretical solution for thermo-elastic analysis of functionally graded (FG) rotating disk with variable thickness based on third-order shear deformation theory (TSDT) in large displacements is presented. Material properties and disk thickness profile are assumed to be represented by power law distributions and the variation of temperature is assumed to occur in the radial direction and by used Von Karman assumptions, equilibrium equations are obtained. DQM and Newton’s method used for solution equilibrium equations and displacement field obtain. Finally, Results of four kind of annular disks with constant thickness, linear, convex and concave curves accounted and the new results have been compared with deflections’ first-order deformation theory (FSDT) and other studies.