Plastic loads of elbows with local wall thinning under in-plane bending

Chang Sik Oh, Yun Jae Kim, Chi Yong Park

研究成果: Article査読

15 被引用数 (Scopus)

抄録

Based on systematic three-dimensional (3-D), large strain FE limit analyses using elastic- perfectly plastic materials, this paper quantifies the effect of local wall thinning on plastic behavior and TES (twice-elastic-slope) plastic loads for 90° elbows under in-plane bending. The thinning geometry is assumed to be rectangular rather than circular, but the nonlinear geometry effect is fully considered. Results from systematic analyses lead to simple approximations for TES plastic loads, covering a wide range of elbow and thinning geometries. Although the proposed approximations are developed for the case when wall thinning locates in the center of the elbow, it is also shown that they can be equally applied to the case when thinning exists anywhere within the elbow. Brief discussion is made on application of the proposed approximations to estimate maximum load-carrying capacities of elbows with local wall thinning.

本文言語English
ページ(範囲)63-79
ページ数17
ジャーナルInternational Journal of Fracture
145
1
DOI
出版ステータスPublished - 2007 5月
外部発表はい

ASJC Scopus subject areas

  • 計算力学
  • モデリングとシミュレーション
  • 材料力学

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