摘要：The influence of temperature-dependent properties on thermal stresses response and optimum design of newly developed ceramic-metal functionally graded mat.rials under cyclic thermal loaning and high temperature gradient environment is studied. The thermal conductivity of mat.rial is considered to be dependent on the temperature. In this paper, the thermal stresses response of the mat.rial is calculated rising a nonlinear finite element method. Emphasis is placed on the influence of temperature-dependent properties on the thermal stresses response characteristics, the thermal stresses relaxation property and the thermal stresses history under the different graded compositional distributions and different heat flux magnitudes. Through tile analysis. it is suggested that the influence of temperature-dependent properties can not be neglected In the thermal stresses response analysis and the optimum design proc.ss of the mat.rial must be based on the temperature-dependent thermo-elastic-plastic theory.