Dynamic crack arrest analysis by ordinary state-based peridynamics

Imachi, Michiya and Tanaka, Satoyuki and OZDEMIR, Murat and Bui, Tinh Quoc and Oterkus, Selda and Oterkus, Erkan (2019) Dynamic crack arrest analysis by ordinary state-based peridynamics. International Journal of Fracture. ISSN 0376-9429 (In Press)

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Abstract

Dynamic fracture analysis for the crack arrest phenomenon is performed by ordinary state-based peridynamics formulation and discretization employing transition bond concept. Double cantilever beam specimen is chosen for our numerical evidence purpose. The analysis consists of two main phases namely, generation and application (prediction) phases. In the generation phase, the dynamic stress intensity factors of propagating and arrested cracks are estimated by the present formulation for given crack path histories, and good agreement is achieved. As for the application phase, dynamic stress intensity factors well as total crack lengths after crack arrests are in good agræment with the experiments. Moreover, the influence of transition bond concept on the crack arrest behavior is investigated and it is found that the transition bond is very efficient in the simulation of the crack arrest problem such that premature arrests of cracks are observed without transition bond cases.

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