Application of refined plate theory to fracture and fatigue
Date
2010
Authors
Kotooussov, A.
Codrington, J.
Editors
Sook Ying Ho,
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Book chapter
Citation
Structural Analysis and Prediction Methods for Aerospace Vehicles and Structures, 2010 / Sook Ying Ho, (ed./s), pp.96-132
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Kotousov, A. and Codrington J.
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Abstract
The work presented here is a compendium of theoretical results obtained by the authors between 2005 and 2009. Among these results are comprehensive analysis of the three-dimensional elastic stress and displacement fields near a tip of a through-the-thickness crack, generalization of the classical strip-yield model for plates having a finite thickness, and development of an analytical approach for calculating the plasticity-induced crack closure and crack growth rates at constant and variable amplitude loading. As an application of the developed approach, new predictive models of various non-linear fatigue crack growth phenomena in plates of finite thickness were developed. These include computational models of crack growth under small-scale yielding conditions and constant amplitude loading, growth of a fatigue crack emanating from a sharp notch, and crack growth retardation phenomenon following an overload cycle. All theoretical predictions were extensively compared with previous numerical and experimental studies demonstrating a great potential of the refined plate theory in the analysis of fracture and fatigue problems.
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© 2010 Bentham