Online from: 2010
Subject Area: Mechanical & Materials Engineering
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|Title:||Analysis of stress distribution in compression precracking|
|Author(s):||Jianguo Yu, (Department of Mechanical and Aeronautical Engineering, Western Michigan University, Kalamazoo, Michigan, USA), Daniel Kujawski, (Department of Mechanical and Aeronautical Engineering, Western Michigan University, Kalamazoo, Michigan, USA)|
|Citation:||Jianguo Yu, Daniel Kujawski, (2010) "Analysis of stress distribution in compression precracking", International Journal of Structural Integrity, Vol. 1 Iss: 2, pp.140 - 152|
|Keywords:||Fatigue, Stress corrosion|
|Article type:||Research paper|
|DOI:||10.1108/17579861011053871 (Permanent URL)|
|Publisher:||Emerald Group Publishing Limited|
|Acknowledgements:||This study is supported by the Office of Naval Research, Grant N00014-07-1-0224. Thanks to P.R. Sree and T.T. Lee for supporting Figures 10 and 12.|
Purpose – The paper aims to shed some light on the effect of the notch/crack-tip stresses and their role on the cyclic plasticity and crack growth behavior in compression-compression fatigue.
Design/methodology/approach – Compression precracking was studied using 2D finite element analysis for CT specimen. The final crack length and the shape of the crack front were compared with those obtained experimentally.
Findings – It has been found that cyclic plasticity and stress redistribution govern the observed fatigue crack growth behavior in compression-compression precracking. Only the internal stress corresponding to
Research limitations/implications – This results are limited to Mode I cracking.
Practical implications – It supports that two thresholds, ?
Originality/value – It has been found that cyclic plasticity and stress redistribution govern the observed fatigue crack growth behavior in compression-compression precracking. The comparison of the numerical results with experimental data in terms of final crack length and crack front shape indicated a fair agreement.
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