Mis-match limit load analyses and approximate J-integral estimates for similar metal weld with weld-center crack under tension load

Tae Kwang Song, Yun Jae Kim, Jong Sung Kim, Tae Eun Jin

Research output: Contribution to journalArticle

2 Citations (Scopus)


In this work, the effect of strength mismatch on plastic limit loads is quantified for similar metal weld plates with cracks under tension load, via three-dimensional, small strain elastic-perfectly plastic finite element analyses. Relevant variables related to plate geometry and crack length are systematically varied, in addition to the weld width. An important finding is that mis-match limit loads can be uniquely quantified through strength mis-match ratio and one geometry-related parameter. Based on the proposed limit load solutions, reference stress based J-integral estimates is also investigated. When the reference stress is defined by the mis-match limit load, predicted J-integral values agree overall well with FE results.

Original languageEnglish
Pages (from-to)411-418
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, A
Issue number5
Publication statusPublished - 2008 May 1



  • Finite element analysis
  • J-integral
  • Limit load analysis
  • Strength-mismatch

ASJC Scopus subject areas

  • Mechanical Engineering

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