Effect of bend angle on plastic loads of pipe bends under internal pressure and in-plane bending

Yun Jae Kim, Kuk Hee Lee, Chang Sik Oh, Bong Yoo, Chi Yong Park

研究成果: Article査読

48 被引用数 (Scopus)

抄録

This paper quantifies the effect of a bend angle of a pipe bend on plastic loads, via small strain and large strain finite element (FE) limit analyses using elastic-perfectly plastic materials. To consider the effect of the attached straight pipe, two limiting cases are considered. One case corresponds to the pipe bend without the attached straight pipe, and the other to that with a sufficiently long attached straight pipe. For the former case, the FE results suggest that the limit load is not affected by the bend angle for both in-plane bending and internal pressure. For the latter case, however, the bend angle affects plastic loads. An interesting finding is that the plastic load smoothly changes from the limit load of the straight pipe when the bend angle approaches zero to the plastic load of the 90{ring operator} pipe bend when the bend angle approaches 90{ring operator}. Based on such observations, closed-form plastic load solutions are proposed for the pipe bend with an arbitrary bend angle under in-plane bending and internal pressure.

本文言語English
ページ(範囲)1413-1424
ページ数12
ジャーナルInternational Journal of Mechanical Sciences
49
12
DOI
出版ステータスPublished - 2007 12月
外部発表はい

ASJC Scopus subject areas

  • 土木構造工学
  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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