THERMAL-STRESS AND DEFORMATION IN FUNCTIONALLY GRADED MATERIAL SHELLSOF REVOLUTION UNDER THERMAL LOADING DUE TO FLUID

This paper is concerned with an analytical formulation and a numerical solution of the thermal stress and deformation for axisymmetrical she lls of functionally graded material (FGM) subjected to thermal loading due to fluid. The temperature distribution through the thickness is a ssumed to be a curve of high order, and the temperature field in the s hell is determined using the equations of heat conduction and heat tra nsfer. The equations of equilibrium and the relationships between the strains and displacements are derived from the Sanders elastic shell t heory, The fundamental equations derived are numerically solved using the finite difference method, As numerical examples, functionally grad ed cylindrical shells composed of SUS 304 and ZrO2 subjected to therma l loads due to fluid are analyzed. Numerical computations are carried out for various compositional distribution profiles in FGM. The result s show that the present method gives correct temperature distributions and that the temperature distributions, stress distributions and defo rmations vary significantly depending on these compositional distribut ion profiles.