Analysis of an Interface Crack Based on the Body Force Method (1st Report, The Basic Theory)

Hironobu Nisitani, Akihide Saimoto, Hiroshi Noguchi

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12 Citations (Scopus)


In this paper, the new method for analyzing two-dimensional interface crack problems was proposed based on the body force method. In the present method, the newly introduced basic density function of the body force doublet make it possible to exactly express the mathematical stress fields near the interface crack. As the overlapping area of the crack is very small compared with the crack size, this phenomenon is usually neglected in ordinary numerical methods, and the stress intensity factors are calculated indirectly by using an extrapolation method with displacements or stresses near a crack tip. However, in the present analysis, the stress intensity factor of an interface crack can be obtained directly from the value of the weighting function at the crack tip.

Original languageEnglish
Pages (from-to)68-73
Number of pages6
JournalTransactions of the Japan Society of Mechanical Engineers Series A
Issue number557
Publication statusPublished - 1993

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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