物性値の温度依存性を考慮した傾斜機能厚肉軸対称殻の動的熱応力解析

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This paper is concerned with the numerical analysis of dynamic thermal stress and deformation for moderately thick shells of revolution made of functionally graded material by using finite element method. The material properties of the shell are continuously inhomogeneous along the shell thickness and dependent on the temperature. The temperature distribution through the shell thickness is expressed with a curve of high order, and thick shell elements are utilized for the analysis. As numerical examples, two kinds of functionally graded material shells composed of SUS 304 and PSZ subjected to thermal loads due to heat generation in the shell bodies are treated; one is a cylindrical shell and another is an axisymmetric shell having a parabolic meridian. In comparison with the results from the characteristic method, good agreement is obtained. And it is found that temperature distributions, stress distributions and deformations are significantly influenced by temperature dependent properties of the materials.
2002-05-25