Image-based modeling and elastic analysis of porous ceramics by the homogenization method

Kimura Keiichi, Takano Naoki, Kubo Futoshi, Ogawa Syusui, Kawamoto Hiroshi, Zako Masaru

研究成果: Article査読

8 被引用数 (Scopus)

抄録

A three-dimensional elastic analysis system for porous ceramics has been built. In this system, three-dimensional morphology of pores is modeled using voxel (volume pixel) elements from digital images. Elastic analysis with this image-based finite element model is performed by the homogenization method. In order to investigate this analysis system, the elastic properties and behavior of porous Al2O3 with spherical pores on the order of 1% by volume were computed. Young's moduli obtained by the homogenization method were consistent with both experimental and theoretical values. Using computed moduli of elasticity, the state of local stress concentration around the pores in a bending test was calculated together with the global stress in the sample. It was found that the dependence of the bending strength upon porosity can be described by taking into account local stresses around the pores. The combination of image-based modeling and homogenization method is a useful way to analyze the mechanical behavior of porous ceramics especially with inhomogeneous morphology.

本文言語English
ページ(範囲)567-575
ページ数9
ジャーナルJournal of the Ceramic Society of Japan
110
1282
DOI
出版ステータスPublished - 2002 6
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 化学 (全般)
  • 凝縮系物理学
  • 材料化学

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