Slip line field analysis of unequally grooved specimens in bending and its implication to constraint toughness testing

Yun Jae Kim, Chang Gyun Oh

Research output: Contribution to journalArticle


This paper proposes slip line fields for bending of unequally grooved specimens that has a sharp crack in one side and a sharp V-notch in the other side. Depending on the back angle, two slip line fields are proposed, from which the limit moment and crack tip stress fields are obtained as a function of the back angle. Excellent agreements between slip line field solutions with those from detailed finite element limit analysis based on non-hardening plasticity provide confidence in the proposed slip line fields. Based on these results, possibility of designing a new toughness testing specimen with varying crack tip constraint is discussed.

Original languageEnglish
Pages (from-to)25-30
Number of pages6
JournalKey Engineering Materials
Volume306-308 I
Publication statusPublished - 2006 Mar 17



  • FE limit analysis
  • Slip line field analysis
  • Unequally grooved specimen

ASJC Scopus subject areas

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

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