衝撃熱負荷を受ける傾斜機能厚肉回転対称殻の応力と変形

概要

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This paper describes an analytical formulation and a numerical solution of the thermal stress and deformation for moderately thick shells of revolution made of functionally graded material (FGM) subjected to thermal impulsive loading. The material properties of the shell are continuously inhomogeneous along the shell thickness. The temperature distribution through the shell thickness is expressed with a curve of high order, and the equations of motion and the relations between the strains and displacements are derived from the Reissner-Naghdi shell theory. The fundamental equations derived are numerically solved using the finite difference method. As numerical examples, functionally graded cylindrical shells subjected to the following two kinds of thermal impulsive loads are treated;one is the thermal loads due to fluid and another is the loads due to heat generation in the shell body. In comparison with the results from the characteristic method, good agreement is obtained. And it is found that the temperature distributions, stress distributions and deformations with time are significantly varied depending on the compositional distribution profiles in FGM.
一般社団法人日本機械学会の論文
2000-05-25