Non-linear fracture mechanics analyses of part circumferential surface cracked pipes

Yun-Jae Kim, Jin Su Kim, Young Ze Lee, Young Jin Kim

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

This paper provides engineering estimates of non-linear fracture mechanics parameters for pipes with part circumferential inner surface cracks, subject to internal pressure and global bending. Solutions are given in the form of two different approaches, the GE/EPRI approach and the reference stress approach. For the GE/EPRI approach, the plastic influence functions for fully plastic J solutions are tabulated based on extensive 3-D FE calculations using deformation plasticity, covering a wide range of pipe and crack geometries. The developed GE/EPRI-type fully plastic J estimation equations are then re-formulated using the concept of the reference stress approach for wider applications. The proposed reference stress based estimates are validated against detailed 3-D elastic-plastic and elastic-creep FE results. For a total of 26 cases considered in this paper, agreement between the proposed reference stress based J and C* estimates and the FE results is excellent. An important aspect of the proposed estimates is that they not only are simple and accurate but also can be used to estimate J and C* at an arbitrary point along the crack front.

Original languageEnglish
Pages (from-to)347-375
Number of pages29
JournalInternational Journal of Fracture
Volume116
Issue number4
DOIs
Publication statusPublished - 2002 Aug 1
Externally publishedYes

Fingerprint

Fracture Mechanics
Fracture mechanics
Pipe
Plastics
Cracks
Estimate
3D
Crack
Influence Function
Surface Crack
Plasticity
Creep
Covering
Geometry
Engineering
Internal
Arbitrary
Range of data

Keywords

  • C*-integral
  • Finite element analysis
  • GE/EPRI approach
  • J-integral

ASJC Scopus subject areas

  • Mechanics of Materials
  • Computational Mechanics

Cite this

Non-linear fracture mechanics analyses of part circumferential surface cracked pipes. / Kim, Yun-Jae; Kim, Jin Su; Lee, Young Ze; Kim, Young Jin.

In: International Journal of Fracture, Vol. 116, No. 4, 01.08.2002, p. 347-375.

Research output: Contribution to journalArticle

Kim, Yun-Jae ; Kim, Jin Su ; Lee, Young Ze ; Kim, Young Jin. / Non-linear fracture mechanics analyses of part circumferential surface cracked pipes. In: International Journal of Fracture. 2002 ; Vol. 116, No. 4. pp. 347-375.
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