Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7169765 | Engineering Fracture Mechanics | 2015 | 46 Pages |
Abstract
The threshold stress intensity factor range ÎKth was analytically calculated under stress control conditions using the plasticity-induced crack closure analysis with the Dugdale model. Before obtaining ÎKth, the accuracy of the method was verified. The characteristics of the crack closure behavior were discussed by specifying the small-scale yielding (SSY) and large-scale yielding (LSY). The analysis results of ÎKth were discussed systematically by non-dimensionalizing them with the Dugdale model. Under the SSY condition, ÎKth was dependent on Young's modulus and Poisson's ratio. Under the LSY condition, ÎKth increased when the initial crack length or yield strain increased.
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Authors
Naoki Fukumura, Tomohiro Suzuki, Shigeru Hamada, Kaneaki Tsuzaki, Hiroshi Noguchi,