MACROSCOPIC ANALYSIS OF AXISYMMETRICAL FUNCTIONALLY GRADIENT MATERIALS UNDER THERMAL LOADING

The axisymmetric functionally gradient materials (FGMs) subject to non uniform temperature variations were studied with the combined use of h omogenization and inhomogeneous eigenstrained media analysis. The mate rial properties and the temperature variations were assumed to depend on the radial coordinate only. The inhomogeneous material properties o f the FGM cylinder can be obtained by modulating the concentration lev el of spherical alumina particles in an aluminum matrix. The resulting stresses due to the temperature variation are presented for numerous distribution functions of alumina particles. It is shown that the part icle distribution extensively influences the intensity and profile of the thermal stresses.