Effect of creep mismatch factor on stress redistribution in welded branch pipes

Jae Jun Han, Yun Jae Kim, Kuk Hee Lee

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

1 Citation (Scopus)

Abstract

This paper describe steady state stress distribution into the weld metal of welded branch components using detailed three dimensional elastic creep finite element analyses. In order to show the effect of the loading mode, this research is carried out under various loading conditions such as internal pressure, inplane bending to the branch pipe and out-of-plane bending to branch pipe. Also, to generalize the unique aspect, three geometries of branch components including welded large bore branch, medium bore branch, and trunnion are considered. It is a well-known fact that the creep strain rate of welds material is faster than that of parent material. Therefore, the creep exponent and constants for the parent and weld metal are systematically varied to analyze under-matching, evenmatching and over-matching conditions in creep. It can be shown that mismatch effect can be quantified as mismatch factor with specific characteristics.

Original languageEnglish
Title of host publicationASME 2010 Pressure Vessels and Piping Division/K-PVP Conference, PVP2010
Pages411-420
Number of pages10
DOIs
Publication statusPublished - 2010 Dec 1
EventASME 2010 Pressure Vessels and Piping Division/K-PVP Conference, PVP2010 - Bellevue, WA, United States
Duration: 2010 Jul 182010 Jul 22

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume5
ISSN (Print)0277-027X

Other

OtherASME 2010 Pressure Vessels and Piping Division/K-PVP Conference, PVP2010
CountryUnited States
CityBellevue, WA
Period10/7/1810/7/22

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ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Han, J. J., Kim, Y. J., & Lee, K. H. (2010). Effect of creep mismatch factor on stress redistribution in welded branch pipes. In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference, PVP2010 (pp. 411-420). (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 5). https://doi.org/10.1115/PVP2010-25373