Interaction between matrix crack and elliptic inclusion under dynamic loadings

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Abstract

The strain-rate effects on the interaction between a matrix crack and an elliptic inclusion in granule composites under dynamic tensile loadings are investigated numerically. It is found that the crack deflection/penetration behavior depends on the relative strength and local curvature of the interface as well as the loading-rate (or strain-rate). For a certain interfacial strength, there exists a critical strain-rate above which the crack can penetrate across the interface; otherwise, the crack deflection occurs. Moreover, the critical strain-rate is found to be dependent only on the local curvature of the interface near the crack tip regardless of the size and shape of the elliptic inclusions.

Original languageEnglish
Pages (from-to)327-337
Number of pages11
JournalJournal of Theoretical and Applied Mechanics
Volume51
Issue number2
Publication statusPublished - 2013

Keywords

  • Crack deflection/penetration
  • Fracture toughness
  • Granule composites
  • Interface

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