Calculation of stress intensity factor using displacement extrapolation method in peridynamic framework

N. Zhu, E. Oterkus

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)
2113 Downloads (Pure)

Abstract

This paper introduces a new approach to calculate stress intensity factors based on a combination of Displacement Extrapolation Method and Peridynamic Theory. After obtaining the displacement field from Peridynamic Theory, by appropriately selecting nodes at the crack tip region and their displacements yield stress intensity factors at the crack tips. To demonstrate the capability of the proposed approach, three different benchmark problems are considered including plate with a central crack, plate with an edge crack and plate with a slanted crack. Results evaluated from the current approach are compared against analytical and finite element analysis results, and good agreement is obtained between three different approaches. This shows that coupled Displacement Extrapolation Method and Peridynamic Theory approach can be an alternative method to calculate stress intensity factors.
Original languageEnglish
Pages (from-to)235-243
Number of pages9
JournalJournal of Mechanics
Volume36
Issue number2
Early online date17 Jan 2020
DOIs
Publication statusPublished - 1 Apr 2020

Keywords

  • stress intensity factor
  • peridynamics
  • displacement extrapolation method

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