Evaluation of coke strength considering pore shapes by using a homogenization method

Kenta Ueoka, Tomoki Ogata, Yoshio Morozumi, Hideyuki Aoki, Takatoshi Miura, Kazuya Uebo, Koichi Fukuda

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

In this study, the effect of pore on coke strength is investigated using a homogenization method. The stress analysis using a homogenization method is carried out for two cases of pore shapes. Case 1 is the round pores with the same diameter, which is regularly arranged in the unit cell. Case 2 is the irregular shape pores arranged randomly in the unit cell. In Case 1, the stress in the coke rises with an increase in the porosity. The stress distribution is determined by the porosity and is independent of the pore diameters and the number of pores. In Case 2, the stress in the coke with the irregular pore shapes increases with porosity and is larger than that with regular pore shapes. This is because that the stress concentration occurs at the sharp edges of pores. In addition, the stress analysis is carried out for the unit cell composed of circular pores which has different diameters and randomly arranged pores. As a result, the existence of circular pore reduces the stress in the coke and hardly lowers the rigidity of the coke while the arrangement of pores has little effect on lowering the rigidity.

Original languageEnglish
Pages (from-to)184-190
Number of pages7
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume92
Issue number3
DOIs
Publication statusPublished - 2006 Mar

Keywords

  • Coke strength
  • Finite element method
  • Homogenization method
  • Microstructure
  • Pore shape

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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