Limit load and approximate J-integral estimates for axial-through wall cracked pipe bend

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper presents plastic limit loads and approximate J estimates for axial through-wall cracked pipe bends under internal pressure and in-plane bending. Geometric variables associated with a crack and pipe bend are systematically varied, and three possible crack locations (intrados, extrados and crown) in pipe bends are considered. Based on small strain finite element limit analyses using elastic-perfectly plastic materials, effect of bend and crack geometries on plastic limit loads for axial through-wall cracked pipe bends under internal pressure and in-plane bending are quantified, and closed-form limit solutions are given. Based on proposed limit load solutions, a J estimation scheme for axial through-wall cracked pipe bends under internal pressure and in-plane bending is proposed based on reference stress approach.

Original languageEnglish
Pages (from-to)562-569
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume31
Issue number5
DOIs
Publication statusPublished - 2007 May
Externally publishedYes

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Keywords

  • Axial through-wall crack
  • Finite element analysis
  • J-estimation
  • Plastic limit load
  • Reference stress

ASJC Scopus subject areas

  • Mechanical Engineering

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