Effect of tensile properties on time-dependent C(t) and J(t) integrals in elastic-plastic-creep FE analysis

So Dam Lee, Han Sang Lee, Yun-Jae Kim, Robert A. Ainsworth, David W. Dean

Research output: Contribution to journalArticle

Abstract

This technical note presents the effect of elastic-plastic properties on calculated time-dependent C(t) and J(t) values. This is investigated via systematic elastic-plastic-creep finite element (FE) analysis. Three different stress-strain curves are used, having essentially the same plastic properties at large strains but different tensile data near the 0.2% proof (yield) strength. It is found that the plastic property in stress-strain curve affects the FE C(t) values only at short times (within approximately 20% of the redistribution time). The plastic property affects the initial J values at time t = 0 but not the rate of change of J(t) with time.

Original languageEnglish
Pages (from-to)171-178
Number of pages8
JournalInternational Journal of Pressure Vessels and Piping
Volume146
DOIs
Publication statusPublished - 2016 Oct 1

Keywords

  • C(t) integral
  • Elastic-plastic-creep
  • J(t) integral

ASJC Scopus subject areas

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

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