Dynamic crack arrest analysis by ordinary state-based peridynamics

Michiya Imachi, Satoyuki Tanaka, Murat Ozdemir, Tinh Quoc Bui, Selda Oterkus, Erkan Oterkus

Research output: Contribution to journalArticle

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.
Original languageEnglish
JournalInternational Journal of Fracture
Publication statusAccepted/In press - 3 Dec 2019

Keywords

  • dynamic fracture analysis
  • crack arrest phenomenon
  • peridynamics
  • dynamic stress
  • intensity

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