Plastic limit pressures for cracked pipes using finite element limit analyses

Yun Jae Kim, Do Jun Shim, Nam Su Huh, Young Jin Kim

研究成果: Article査読

78 被引用数 (Scopus)

抄録

Based on detailed finite element (FE) limit analyses, the present paper provides approximations for plastic limit pressure solutions for plane strain pipes with extended inner axial cracks; axi-symmetric (inner) circumferential cracks; axial through-wall cracks; axial (inner) surface cracks; circumferential through-wall cracks; and circumferential (inner) surface cracks. In particular, for surface crack problems, the effect of the crack shape, semi-elliptical or rectangular, on the limit pressure is quantified. Comparisons with existing analytical and empirical solutions show a large discrepancy for short circumferential through-wall cracks and for surface cracks (both axial and circumferential). Being based on detailed 3D FE limit analysis, the present solutions are believed to be accurate, and thus to be valuable information not only for plastic collapse analysis of pressurised piping but also for estimating non-linear fracture mechanics parameters based on the reference stress approach.

本文言語English
ページ(範囲)321-330
ページ数10
ジャーナルInternational Journal of Pressure Vessels and Piping
79
5
DOI
出版ステータスPublished - 2002 5 5
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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