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

Han Sang Lee; Jin-Ho Je; Yun Jae Kim; Robert Ainsworth; Peter J Budden

doi:10.1111/ffe.12418

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

Han Sang Lee, Jin-Ho Je, Yun Jae Kim, Robert Ainsworth, Peter J Budden

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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 language	English
Journal	Fatigue & Fracture of Engineering Materials and Structures
Early online date	26 Feb 2016
DOIs	https://doi.org/10.1111/ffe.12418
Publication status	Published - 4 Aug 2016

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J98_accepted paper_J and C(t)_FFEMS_revAccepted author manuscript, 1.04 MB

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

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.",

author = "{Sang Lee}, Han and Jin-Ho Je and Kim, {Yun Jae} and Robert Ainsworth and Budden, {Peter J}",

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T1 - General time-dependent C(t) and J(t) estimation equations for elastic-plastic-creep fracture mechanics analysis

AU - Sang Lee, Han

AU - Je, Jin-Ho

AU - Kim, Yun Jae

AU - Ainsworth, Robert

AU - Budden, Peter J

PY - 2016/8/4

Y1 - 2016/8/4

N2 - 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.

AB - 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.

U2 - 10.1111/ffe.12418

DO - 10.1111/ffe.12418

M3 - Article

SN - 1460-2695

JO - Fatigue & Fracture of Engineering Materials and Structures

JF - Fatigue & Fracture of Engineering Materials and Structures

ER -

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

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