Estimation of transient creep C(t)-integrals for SE(B) specimen under elastic-plastic-creep conditions

Han Sang Lee, Jin Ho Je, Dong Jun Kim, Yun-Jae Kim

Research output: Contribution to journalArticle

Abstract

In this paper, we estimate the time-dependent C(t) integrals under elastic-plastic-creep conditions. Finite-element (FE) transient creep analyses have been performed for single-edge-notched-bend (SEB) specimens. We investigate the effect of the initial plasticity on the transient creep by systematically varying the magnitude of the initial step load. We consider both the same stress exponent and different stress exponents in the power-law creep and plasticity to elastic-plastic-creep behavior. To estimate the C(t) integrals, we compare the FE analysis results with those obtained using formulas. In this paper, we propose a modified equation to predict the C(t) integrals for the case of creep exponents that are different from the plastic exponent.

Original languageEnglish
Pages (from-to)851-857
Number of pages7
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume39
Issue number9
DOIs
Publication statusPublished - 2015 Sep 1

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Keywords

  • C-integrals
  • Elastic-plastic-creep
  • FE Analysis
  • SEB Specimen
  • Transient Creep

ASJC Scopus subject areas

  • Mechanical Engineering

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