Application of the GTN model to ductile crack growth simulation in through-wall cracked pipes

Young Ryun Oh, Hyun Suk Nam, Yun Jae Kim, Naoki Miura

研究成果: Article

10 引用 (Scopus)

抜粋

This paper presents ductile fracture simulation using the GTN (Gurson-Tvergaard-Needleman) model of through-wall cracked STPT410 carbon steel pipe test under pure bending. Three issues related to practical application are addressed; (i) how to determine the parameters in the GTN model from fracture toughness data, (ii) how to incorporate the element-size effect to the GTN model and (iii) the effect of the crack-tip mesh design on determination of the GTN model parameters. It is found that determined values of the parameters depend on the crack-tip mesh design and the finite element size used in simulation. The split of the crack tip element into two makes parameter determination easier and gives better simulation results, but is difficult to apply to three-dimensional surface crack problems.

元の言語English
ページ(範囲)35-44
ページ数10
ジャーナルInternational Journal of Pressure Vessels and Piping
159
DOI
出版物ステータスPublished - 2018 1 1
外部発表Yes

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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