Quantification of stress redistribution due to mismatch in creep properties in welded branch pipes

K. H. Lee, Y. J. Kim, K. B. Yoon, K. Nikbin, D. Dean

研究成果: Article査読

17 被引用数 (Scopus)

抄録

This paper reports steady-state stress distributions within the weld metal in a welded branch component, via detailed three-dimensional elastic-creep finite element analyses. The creep exponent and constants for the base and weld metal are systematically varied to simulate under-matching, even-matching and over-matching conditions in creep. Various loading conditions are also considered to see the effect of the loading mode. It is found that the mismatch effect in creep on steady-state stresses within the weld metal can be uniquely quantified by the mismatch factor, defined as a function of creep exponent and constant. Ratios of section-averaged (effective and maximum principal) stresses for the mismatched case to those for the even-matched case are linearly dependent on the mismatch factor.

本文言語English
ページ(範囲)238-251
ページ数14
ジャーナルFatigue and Fracture of Engineering Materials and Structures
33
4
DOI
出版ステータスPublished - 2010 4月
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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