Effects of geometry and combined loading on steady-state creep stresses in welded branches

Jae Jun Han, Kuk Hee Lee, Yun-Jae Kim, Kamran Nikbin, David Dean

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In our previous paper, it was found that the mis-match effect in creep on steady-state stresses within the weld metal for a large bore branch junction could be uniquely quantified by the mis-match factor defined as a function of the creep stress exponent and the ratio of creep constants for the base and weld materials. Furthermore ratios of section-averaged (effective and maximum principal) stresses for the mis-matched case to those for the even-matched case were linearly dependent on the mis-match factor. Above results were obtained for a specific branch geometry under single loading. This paper extends our previous analysis to other branch geometries and to combined loading. It is found that above conclusions can be applied to general branch components under combined loading.

Original languageEnglish
Pages (from-to)395-402
Number of pages8
JournalInternational Journal of Pressure Vessels and Piping
Volume88
Issue number10
DOIs
Publication statusPublished - 2011 Oct 1

    Fingerprint

Keywords

  • Creep mis-match
  • Finite element analysis
  • Steady-state stresses
  • Welded branch junctions

ASJC Scopus subject areas

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

Cite this