Mismatch limit loads and approximate J estimates for tensile plates with constant-depth surface cracks in the center of welds

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

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The present work provides mismatch limit loads and approximate J estimates for tensile plates with constant-depth, part-through surface cracks in the center of the weld metal. Based on systematic three-dimensional FE limit analyses, effects of strength mismatch related variables on limit loads are firstly quantified by the strength mismatch ratio and one geometry-related parameter. Mismatch limit loads for part-through surface cracks are then correlated to those for two-dimensional, through-wall crack problems. Based on the proposed limit load solutions, the applicability of the reference stress based J estimates is also investigated. When the reference stress is defined by the mismatch limit load, predicted J values agree overall well with FE results.

Original languageEnglish
Pages (from-to)343-360
Number of pages18
JournalInternational Journal of Fracture
Volume148
Issue number4
DOIs
Publication statusPublished - 2007 Dec 1
Externally publishedYes

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Surface Crack
Load limits
Welds
Cracks
Estimate
Crack
Metals
Geometry
Three-dimensional

Keywords

  • Finite element analysis
  • Mismatch limit load
  • Reference stress based J-integral
  • Strength mismatched plate
  • Surface crack

ASJC Scopus subject areas

  • Computational Mechanics
  • Modelling and Simulation
  • Mechanics of Materials

Cite this

Mismatch limit loads and approximate J estimates for tensile plates with constant-depth surface cracks in the center of welds. / Song, Tae Kwang; Kim, Yun Jae; Kim, Jong Sung; Jin, Tae Eun.

In: International Journal of Fracture, Vol. 148, No. 4, 01.12.2007, p. 343-360.

Research output: Contribution to journalArticle

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