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A computational procedure for evaluating theJ-integral for mode І crack in welds: A 3-D finite element analysis

Authors
Journal
Computational Materials Science
0927-0256
Publisher
Elsevier
Publication Date
Volume
46
Issue
1
Identifiers
DOI: 10.1016/j.commatsci.2009.02.021
Keywords
  • J-Integral
  • Welds
  • Residual Stresses
  • Finite Element Analysis
  • Mode І Crack
Disciplines
  • Computer Science
  • Physics

Abstract

Abstract In this study, a computational procedure capable of evaluating the J-integral for mode I crack in welds is presented. An uncoupled three-dimensional thermal elastic–plastic finite element method is utilized to obtain residual stress distributions in welds. The resulting residual stress fields are then fed into the subsequent fracture mechanics analysis of mode I crack in welds. Moreover, analytical expression of the J-integral for mode I crack in a three-dimensional residual stress bearing body which yields domain-independent values is given in a form suitable for the numerical analysis. The J-values for the combined residual and mechanical loading are calculated and discussed.

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