Predicting crack propagation with peridynamics: A comparative study

Abigail Agwai, Ibrahim Guven, Erdogan Madenci

Research output: Contribution to journalArticlepeer-review

107 Scopus citations

Abstract

The fidelity of the peridynamic theory in predicting fracture is investigated through a comparative study. Peridynamic predictions for fracture propagation paths and speeds are compared against various experimental observations. Furthermore, these predictions are compared to the previous predictions from extended finite elements (XFEM) and the cohesive zone model (CZM). Three different fracture experiments are modeled using peridynamics: two experimental benchmark dynamic fracture problems and one experimental crack growth study involving the impact of a matrix plate with a stiff embedded inclusion. In all cases, it is found that the peridynamic simulations capture fracture paths, including branching and microbranching that are in agreement with experimental observations. Crack speeds computed from the peridynamic simulation are on the same order as those of XFEM and CZM simulations. It is concluded that the peridynamic theory is a suitable analysis method for dynamic fracture problems involving multiple cracks with complex branching patterns.

Original languageEnglish (US)
Pages (from-to)65-78
Number of pages14
JournalInternational Journal of Fracture
Volume171
Issue number1
DOIs
StatePublished - Sep 1 2011

Keywords

  • Crack branching
  • Dynamic fracture
  • Microbranching
  • Peridynamic theory

ASJC Scopus subject areas

  • Computational Mechanics
  • Modeling and Simulation
  • Mechanics of Materials

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