Calculation of mixed-mode stress field at a sharp notch tip using M -integral

J. H. Chang, W. H. Wu

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Direct computation of the mixed-mode stress field at a sharp notch tip appears to be difficult in that the mode I and mode II asymptotic stresses are in general governed by different orders of singularity. In this paper, we first present a path-independent integral termed M. The relation between M and the generalized stress intensity factors is then derived and expressed as function of the notch angle. Once the M -integrals are accurately computed, the generalized SIF's and, consequently, the asymptotic mixed-mode stress field can thus be properly determined. No extra complementary solutions are required in the formulation. Further, no particular singular elements are required when the integration is performed by using finite elements.

Original languageEnglish
Pages (from-to)419-427
Number of pages9
JournalComputational Mechanics
Volume31
Issue number5
DOIs
StatePublished - Jul 2003

Keywords

  • Generalized SIF's
  • M-integral
  • Mixed-mode stresses
  • Notch tip
  • Path-independence
  • Singular behavior

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