Approximate elastic-plastic J estimate of cylinders with off-centered circumferential through-wall cracks

Do Jun Shim, Nam Su Huh, Yun Jae Kim, Young Jin Kim

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

This paper provides approximate J estimates for off-centred, circumferential through-wall cracks in cylinders under bending and under combined tension and bending. The proposed method is based on the reference stress approach, where the dependence of elastic and plastic influence functions of J on the cylinder/crack geometry, the off-centred angle and strain hardening is minimised through the use of a proper normalising load. Based on published limited FE results for off-centred, circumferential through-wall cracks under bending, such normalising load is found, based on which the reference stress based J estimates are proposed for more general cases, such as for a different cylinder geometry and for combined loading. Comparison of the estimated J with extensive FE J results shows overall good agreements for different crack/cylinder geometries and for combined tension and bending, which provides sufficient confidence in the use of the proposed method to fracture mechanics analyses of off-centred circumferential cracks. Furthermore, the proposed method is simple to use, giving significant merits in practice.

Original languageEnglish
Pages (from-to)51-58
Number of pages8
JournalAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume461
DOIs
Publication statusPublished - 2003 Nov 19
Externally publishedYes
Event2003 ASME Pressure Vessels and Piping Conference - Cleveland, OH, Afghanistan
Duration: 2003 Jul 202003 Jul 24

ASJC Scopus subject areas

  • Mechanical Engineering

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