General time-dependent C(t) and J(t) estimation equations for elastic-plastic-creep fracture mechanics analysis

H. S. Lee, J. H. Je, Yun Jae Kim, R. A. Ainsworth, P. J. Budden

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper presents equations for estimating the crack tip characterizing parameters C(t) and J(t), for general elastic-plastic-creep conditions where the power-law creep and plasticity stress exponents differ, by modifying the plasticity correction term in published equations. The plasticity correction term in the newly proposed equations is given in terms of the initial elastic-plastic and steady-state creep stress fields. The predicted C(t) and J(t) results are validated by comparison with systematic elastic-plastic-creep FE results. Good agreement with the FE results is found.

Original languageEnglish
Pages (from-to)1092-1104
Number of pages13
JournalFatigue and Fracture of Engineering Materials and Structures
Volume39
Issue number9
DOIs
Publication statusPublished - 2016 Sep 1
Externally publishedYes

Keywords

  • crack-tip stress fields
  • elastic-plastic-creep
  • plasticity correction term
  • time-dependent C(t) and J(t) estimation equations

ASJC Scopus subject areas

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

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