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

기능경사 소재 등가 물성치 예측을 위한 균질화 기법의 특성분석을 위한 수치해석

  • 조진래 (부산대학교 기계공학부) ;
  • 최주형 (부산대학교 기계공학부 대학원) ;
  • 신대섭 (부산대학교 기계공학부 대학원)
  • Published : 2008.02.28

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.

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