Limit loads and approximate J estimates for axial through-wall cracked pipe bends

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

Research output: Contribution to journalArticlepeer-review

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

Original languageEnglish
Pages (from-to)249-264
Number of pages16
JournalInternational Journal of Fracture
Volume146
Issue number4
DOIs
Publication statusPublished - 2007 Aug

Keywords

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

ASJC Scopus subject areas

  • Computational Mechanics
  • Modelling and Simulation
  • Mechanics of Materials

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