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 journalArticlepeer-review

    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 Sept

    Bibliographical note

    Publisher Copyright:
    © 2015 The Korean Society of Mechanical Engineers.

    Keywords

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

    ASJC Scopus subject areas

    • Mechanical Engineering

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