Closed form solution of stress intensity factors for cracks emanating from surface semi-spherical cavity in finite body with energy release rate method
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In this paper, a new semi-analytical and semi-engineering method of the closed form solution of stress intensity factors (SIFs) of cracks emanating from a surface semi-spherical cavity in a finite body is derived using the energy release rate theory. A mode of crack opening displacements of a normal slice is established, and the normal slice relevant functions are introduced. The proposed method is both effective and accurate for the problem of three-dimensional cracks emanating from a surface cavity. A series of useful results of SIFs are obtained.
Key wordsstress intensity factor (SIF) closed form solution surface cavity three- dimensional crack normal slice
Chinese Library ClassificationO346.1
2010 Mathematics Subject Classification74B99
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