Analysis of fracture behavior of coke with non-adhesion region boundaries by rigid bodies-spring model

Kenichi Hiraki, Hideyuki Hayashizaki, Tomoki Ogata, Yoshiaki Yamazaki, Yohsuke Matsushita, Hideyuki Aoki, Takatoshi Miura, Koichi Fukuda, Kanji Matsudaira

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Synopsis : To investigate the effect of mechanical properties and non-adhesion region boundaries in coke on behavior of coke, fracture analyses using RBSM (Rigid Bodies-Spring Model) were carried out for coke. First, the fracture analyses with RBSM assuming 4-point bending tests were carried out for two cases by applying the approximate equations of the shear strength. The approximate equation of the shear strength derived from internal friction angle and the one for brittle materials like glasses and rocks were applied to analytical objects. When the approximate equation of the shear strength for brittle materials like glasses and rocks was applied, analytical results reproduce the fracture behavior better than the other one. It is known that non-adhesion region boundaries in coke influences coke strength, so the fracture analyses with RBSM assuming 4-point bending tests were also carried out to investigate the effect of non-adhesion region boundaries in coke. Analytical results showed that the fracture started at non-adhesion region boundaries when non-adhesion region boundaries were located under region of high stress. It was also indicated that fracture loads varied due to the difference in fracture strength at non-adhesion region boundaries even if non-adhesion region boundaries existed at the same point. As a result, it is supposed that non-adhesion region boundaries in coke influence crack propagation and fracture load and are the important intensity factor.

Original languageEnglish
Pages (from-to)313-318
Number of pages6
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume96
Issue number5
DOIs
Publication statusPublished - 2010 May

Keywords

  • Adhesion
  • Coke
  • Fracture
  • RBSM (rigid bodies-spring model)

ASJC Scopus subject areas

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

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