General estimation equation of transient C(t) under load and displacement control

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

doi:10.1016/j.prostr.2016.06.105

General estimation equation of transient C(t) under load and displacement control

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

Department of Mechanical Engineering

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

This paper propose estimation equations of transient C(t)-integrals for general material properties where plastic and creep stress exponent are different under load and displacement control. The new equations are made by modifying the plasticity correction term in the existing equations. The modified plasticity corrections term is expressed in terms of initial elastic-plastic and steady state creep stress fields. For validation, elastic-plastic-creep finite element analysis are performed. FE results are compared with predicted C(t) results using proposed equations. Good agreement with FE results is found even when plastic and creep stress exponents are different.

Original language	English
Pages (from-to)	817-824
Number of pages	8
Journal	Procedia Structural Integrity
Volume	2
DOIs	https://doi.org/10.1016/j.prostr.2016.06.105
Publication status	Published - 2016 Jan 1

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Keywords

Crack-tip stress fields
Elastic-plastic-creep
Load and displacement control
Transient C(t)-integrals

ASJC Scopus subject areas

Mechanical Engineering
Mechanics of Materials
Civil and Structural Engineering
Materials Science(all)

Cite this

Lee, H. S., Kim, D. J., Je, J. H., Kim, Y-J., Ainsworth, R. A., & Budden, P. J. (2016). General estimation equation of transient C(t) under load and displacement control. Procedia Structural Integrity, 2, 817-824. https://doi.org/10.1016/j.prostr.2016.06.105

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abstract = "This paper propose estimation equations of transient C(t)-integrals for general material properties where plastic and creep stress exponent are different under load and displacement control. The new equations are made by modifying the plasticity correction term in the existing equations. The modified plasticity corrections term is expressed in terms of initial elastic-plastic and steady state creep stress fields. For validation, elastic-plastic-creep finite element analysis are performed. FE results are compared with predicted C(t) results using proposed equations. Good agreement with FE results is found even when plastic and creep stress exponents are different.",

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AU - Je, Jin Ho

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AU - Ainsworth, Robert A.

AU - Budden, Peter J.

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10.1016/j.prostr.2016.06.105