Plastic limit pressures of circumferential cracked pipe bends

Seok Pyo Hong, Jong Hyun Kim, Yun Jae Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper provides limit pressures for circumferential cracked pipe bends, resulting from systematic, small strain FE limit analyses using elastic-perfectly plastic materials. Circumferential through-wall and constant-depth part-through surface cracks at both extrados and intrados are considered, but the length of circumferential through-wall cracks is limited to 50% of the circumference. It is found that limit pressures of pipe bends are not affected by the presence of the circumferential surface crack, unless it is sufficiently deep and long. Moreover limit pressures for circumferential surface cracked pipe bend decrease almost linearly with increasing a/t and . Based on FE results, approximate closed-form solutions for limit pressures are given.

Original languageEnglish
Title of host publication17th European Conference on Fracture 2008
Subtitle of host publicationMultilevel Approach to Fracture of Materials, Components and Structures
Pages2555-2562
Number of pages8
Publication statusPublished - 2008 Dec 1
Event17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17 - Brno, Czech Republic
Duration: 2008 Sep 22008 Sep 5

Publication series

Name17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures
Volume3

Other

Other17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17
CountryCzech Republic
CityBrno
Period08/9/208/9/5

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Keywords

  • Circumferential part-through surface and through-wall cracks
  • Finite element limit analysis
  • Limit pressure
  • Pipe Bend

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

Hong, S. P., Kim, J. H., & Kim, Y. J. (2008). Plastic limit pressures of circumferential cracked pipe bends. In 17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures (pp. 2555-2562). (17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures; Vol. 3).