拡張個別要素法による動的熱応力解析

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  • Numerical Analysis of Dynamic Thermal Stress by Extended Distinct Element Method
  • カクチョウ コベツ ヨウソホウ ニ ヨル ドウテキ ネツオウリョク カイセキ

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This paper presents the numerical analysis of dynamic thermal stresses by the extended distinct element method (EDEM), which is a kind of the meshless methods. The new technique which radii of the elements of the EDEM are changed with the temperature of each element is proposed. The temperature of the element is calculated on the basis of the heat conduction between elements. By the comparison between the analytical result of Sternberg and Chakravorty and the numerical result obtained by the proposed method, it was confirmed that the method was effective for the dynamic thermal stress analysis. Numerical examples were also presented for the cases of a non-homogeneous plate subjected to the surface heating and a glass block with an initial crack subjected to the surface heating. From these numerical results, it was found that the method based on the EDEM is an efficient tool for analysis of dynamic thermal stresses.

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