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The relationship between C-t and contour integrals under small-scale transient creep
- Issue Date
- Feb-2010
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Contour integral; C(t) integral; C-t integral; Finite element analysis
- Citation
- ENGINEERING FRACTURE MECHANICS, v.77, no.3, pp 565 - 574
- Pages
- 10
- Journal Title
- ENGINEERING FRACTURE MECHANICS
- Volume
- 77
- Number
- 3
- Start Page
- 565
- End Page
- 574
- ISSN
- 0013-7944
- Abstract
- In this paper, the relationship between the C-t and contour integrals for small-scale transient creep conditions is established, via elastic-creep finite element analysis. It is found that the C-t integral is similar to the contour integral value evaluated roughly at the creep zone size defined as the boundaries where time-dependent effective creep strains equal the instantaneous effective elastic strains and measured normal to the crack plane at the crack tip. (C) 2009 Elsevier Ltd. All rights reserved.
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