Evaluation of stress intensity factors due to welding residual stresses for circumferential cracked pipes

Chang Young Oh, Yun Jae Kim, Young Jin Oh, Jong Sung Kim, Tae Kwang Song, Yong Beum Kim

研究成果: Article

7 引用 (Scopus)

抜粋

To investigate the applicability of existing methods to estimate stress intensity factors due to welding residual stresses, comparisons with finite element (FE) solutions are made for two types of generic welding residual stress profiles, generated by simulating repair welds. It is found that fitting residual stresses over the crack depth using third-order polynomials gives good estimates of stress intensity factors but fitting over the entire thickness can result in inaccurate estimates even with fourth-order polynomials. Noting that welding residual stresses are often determined from FE analyses, linearization of residual stresses to estimate stress intensity factors is proposed. Comparison with FE solutions shows good agreements.

元の言語English
ページ(範囲)36-48
ページ数13
ジャーナルInternational Journal of Pressure Vessels and Piping
105-106
DOI
出版物ステータスPublished - 2013 5 1
外部発表Yes

ASJC Scopus subject areas

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

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