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Numerical Analysis for the Characteristic Investigation of Homogenization Techniques Used for Equivalent Material Properties of Functionally Graded Material  

Cho, Jin-Rae (부산대학교 기계공학부)
Choi, Joo-Hyoung (부산대학교 기계공학부 대학원)
Shin, Dae-Sub (부산대학교 기계공학부 대학원)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.21, no.1, 2008 , pp. 13-20 More about this Journal
Abstract
Graded layers in which two different constituent particles are mixed are inserted into functionally graded material such that the volume fractions of constituent particles vary continuously and functionally over the entire material domain. The material properties of this dual-phase graded region, which is essential for the numerical analysis of the thermo-mechanical behavior of FGM, have been predicted by traditional homogenization methods. But, these methods are limited to predict the global equivalent material properties of FGMs because the detailed geometry information such as the particel shape and the dispersion structure is not considered. In this context, this study intends to investigate the characteristics of these homogenization methods through the finite element analysis utilizing the discrete micromechanics models of the graded layer, for various volume fractions and external loading conditions.
Keywords
functionally graded material; volume fraction; linear rule of mixtures; modified rule of mixtures; wakashima-tsukamoto estimate; discrete micromechanics model; finite element analysis;
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