The effect of initial imperfection on buckling strength for straight and curved pipe under pure bending load

Hartono Yudo, Takao Yoshikawa

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

The effect of initial imperfection on the buckling strength of a straight pipe under bending has been investigated by nonlinear FEA, considering the effect of a cross sectional oval deformation by changing the variables of pipes, that is, L/D varying from about 2.5 to 20 and D/t varying from about 50 to 200. Furthermore also the buckling strength of curved pipes (D/t = 200) have been investigated by changing R/D from 50 to 200. Not only the elastic buckling but also the elasto-plastic buckling was investigated. From the numerical results, the followings were found. The buckling strength reduced more in longer pipes than shorter pipes due to pre-buckling oval deformation. But, the reduction of buckling strength due to imperfection is larger in shorter pipes than in longer pipes. Moreover, the buckling strength reduces more by the imperfection of buckling mode than by that of oval mode. The effect of imperfection on buckling strength in plastic region was smaller than in elastic region. The buckling moment of curved pipes reduces more when the curvature of pipe increases in both original and imperfect pipes, especially for longer pipes.

本文言語英語
ホスト出版物のタイトルProceedings of the 24th International Ocean and Polar Engineering Conference, ISOPE Busan
出版社International Society of Offshore and Polar Engineers
ページ64-71
ページ数8
ISBN(印刷版)9781880653913
出版ステータス出版済み - 1 1 2014
イベント24th International Ocean and Polar Engineering Conference, ISOPE 2014 Busan - Busan, 大韓民国
継続期間: 6 15 20146 20 2014

出版物シリーズ

名前Proceedings of the International Offshore and Polar Engineering Conference
ISSN(印刷版)1098-6189
ISSN(電子版)1555-1792

その他

その他24th International Ocean and Polar Engineering Conference, ISOPE 2014 Busan
国/地域大韓民国
CityBusan
Period6/15/146/20/14

All Science Journal Classification (ASJC) codes

  • エネルギー工学および電力技術
  • 海洋工学
  • 機械工学

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