材料定数の温度依存性が考慮された傾斜機能材料円筒の非定常熱応力解析

抄録

The plane-strain thermoelastic problem in a hollow circular cylinder of functionally gradient material (FGM) is formulated in terms of a stress function taking into account the temperature-dependent properties of the material. The formulation is achieved by deriving the conditions necessary for the assurance of the single valuedness of rotation and displacements in a hollow circular cylinder with arbitrary nonhomogeneities and temperature-dependent properties of material. Numerical analysis by the finite difference method to show a use for the proposed formulation is presented for PSZ (partially stabilized zirconia) / SUS 304 (type 304 stainless steel) FGM and PSZ / LCS (low carbon steel) FGM circular cylinders subjected to unaxisymmetric transient heating on the inner boundary surface. The significance of the temperature-dependent properties of material to the thermoelastic material design of FGM is quantitatively discussed.