Limit loads and fracture mechanics parameters for thick-walled pipes

Nak Hyun Kim, Chang Sik Oh, Yun Jae Kim, Jong Sung Kim, Dong Wook Jerng, Peter J. Budden

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

In this paper, information on plastic limit loads and both elastic and elastic-plastic fracture mechanics parameters is given for cracked thick-walled pipes with mean radius-to-thickness ratios ranging from two to five. It is found that existing limit load expressions for thin-walled pipes can be applied to thick-walled pipes, provided that they are normalized with respect to the corresponding un-cracked thick-walled pipe values. For elastic fracture mechanics parameters, FE values of the influence functions for the stress intensity factor and the crack opening displacement are tabulated. For elastic-plastic J, it is shown that existing reference stress based J estimates can be applied, provided that a proper limit load for thick-walled pipes is used.

Original languageEnglish
Pages (from-to)403-414
Number of pages12
JournalInternational Journal of Pressure Vessels and Piping
Volume88
Issue number10
DOIs
Publication statusPublished - 2011 Oct 1
Externally publishedYes

Keywords

  • Crack opening displacement
  • J-integral estimates
  • Limit load
  • Stress intensity factor
  • Thick-walled pipe

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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