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

doi:10.3795/KSME-A.2015.39.9.851

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

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	851-857
Number of pages	7
Journal	Transactions of the Korean Society of Mechanical Engineers, A
Volume	39
Issue number	9
DOIs	https://doi.org/10.3795/KSME-A.2015.39.9.851
Publication status	Published - 2015 Sept

Keywords

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

ASJC Scopus subject areas

Mechanical Engineering

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10.3795/KSME-A.2015.39.9.851

Cite this

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

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.",

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AB - 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.

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KW - Elastic-plastic-creep

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KW - SEB Specimen

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

Abstract

Keywords

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