Calculation of surface energy associated with formation of multiple kinked cracks

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Abstract

An energy parameter termed Mc is proposed for calculation of the surface energy associated with formation of multiple kinked cracks in 2-D anisotropic elastic solids. The formulation is based on a path-independent contour integral. The surface energy can be exactly evaluated by Mc when the cracked solids are homogeneously-stressed (i.e., the material characteristic), and effectively approximated when the solids are nonhomogeneously-stressed (i.e., the structural characteristic). It is thus suggested that Mc be possibly used as a fracture parameter that quantitatively measures the degradation of material (e.g. in micromechanics) and/or structural integrity due to irreversible evolution of multiple kinked cracks.

Original languageEnglish
Pages (from-to)1729-1739
Number of pages11
JournalComputers and Structures
Volume85
Issue number23-24
DOIs
StatePublished - Dec 2007

Keywords

  • M-integral
  • Material characteristic
  • Multiple kinked cracks
  • Path-independence
  • Structural characteristic
  • Surface energy

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