Biaxial stress effects on estimating J under combined mechanical and thermal stresses

Chang Young Oh, Yun-Jae Kim, Peter Budden, Robert A. Ainsworth

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In this paper, the applicability to bi-axial stress states of a simple approximation proposed in our previous work for quantifying the elastic-plastic J under combined primary and secondary stresses is investigated.To produce the bi-axial stress states, circumferential cracked pipes under combined pressure, axial tension (or compression) and thermal stresses are considered. The results suggest that the proposed approximation can be applied to bi-axial stress states, and is slightly more conservative for bi-axial mechanical stresses than for uni-axial ones. The degree of conservatism decreases with increasing strain hardening exponent and with increasing relative magnitude of secondary stress.

Original languageEnglish
Pages (from-to)365-374
Number of pages10
JournalInternational Journal of Pressure Vessels and Piping
Volume88
Issue number10
DOIs
Publication statusPublished - 2011 Oct 1

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Keywords

  • Bi-axial stress
  • Combined primary and secondary stresses
  • Finite element analysis
  • J-integral
  • V-factor

ASJC Scopus subject areas

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

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