Evaluation of ultimate strength of stiffened panels under longitudinal thrust

Satoyuki Tanaka, Daisuke Yanagihara, Aya Yasuoka, Minoru Harada, Shigenobu Okazawa, Masahiko Fujikubo, Tetsuya Yao

研究成果: ジャーナルへの寄稿記事

39 引用 (Scopus)

抄録

A series of collapse analyses is performed applying nonlinear FEM on stiffened panels subjected to longitudinal thrust. MSC.Marc is used. Numbers, types and sizes of stiffeners are varied and so slenderness ratio as well as aspect ratio of local panels partitioned by stiffeners keeping the spacing between adjacent longitudinal stiffeners the same. Initial deflection of a thin-horse mode is imposed on local panels and that of flexural buckling and tripping modes on stiffeners to represent actual initial deflection in stiffened panels in ship structures. On the basis of the calculated results, buckling/plastic collapse behaviour of stiffened panels under longitudinal thrust is investigated. The calculated ultimate strength are compared with those obtained by applying several existing methods such as CSR for bulk carriers and PULS. Simple formulas for stiffened panels, of which collapse is dominated fundamentally by the collapse of local panels between longitudinal stiffeners, are also examined if they accurately estimate the ultimate strength. Through comparison of the estimated results with the FEM results, it has been concluded that PULS and modified FYH formulas fundamentally give good estimation of the ultimate strength of stiffened panels under longitudinal thrust.

元の言語英語
ページ(範囲)21-50
ページ数30
ジャーナルMarine Structures
36
DOI
出版物ステータス出版済み - 4 1 2014
外部発表Yes

Fingerprint

Buckling
Finite element method
Aspect ratio
Ships
Plastics

All Science Journal Classification (ASJC) codes

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

これを引用

Evaluation of ultimate strength of stiffened panels under longitudinal thrust. / Tanaka, Satoyuki; Yanagihara, Daisuke; Yasuoka, Aya; Harada, Minoru; Okazawa, Shigenobu; Fujikubo, Masahiko; Yao, Tetsuya.

:: Marine Structures, 巻 36, 01.04.2014, p. 21-50.

研究成果: ジャーナルへの寄稿記事

Tanaka, Satoyuki ; Yanagihara, Daisuke ; Yasuoka, Aya ; Harada, Minoru ; Okazawa, Shigenobu ; Fujikubo, Masahiko ; Yao, Tetsuya. / Evaluation of ultimate strength of stiffened panels under longitudinal thrust. :: Marine Structures. 2014 ; 巻 36. pp. 21-50.
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AU - Yasuoka, Aya

AU - Harada, Minoru

AU - Okazawa, Shigenobu

AU - Fujikubo, Masahiko

AU - Yao, Tetsuya

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AB - A series of collapse analyses is performed applying nonlinear FEM on stiffened panels subjected to longitudinal thrust. MSC.Marc is used. Numbers, types and sizes of stiffeners are varied and so slenderness ratio as well as aspect ratio of local panels partitioned by stiffeners keeping the spacing between adjacent longitudinal stiffeners the same. Initial deflection of a thin-horse mode is imposed on local panels and that of flexural buckling and tripping modes on stiffeners to represent actual initial deflection in stiffened panels in ship structures. On the basis of the calculated results, buckling/plastic collapse behaviour of stiffened panels under longitudinal thrust is investigated. The calculated ultimate strength are compared with those obtained by applying several existing methods such as CSR for bulk carriers and PULS. Simple formulas for stiffened panels, of which collapse is dominated fundamentally by the collapse of local panels between longitudinal stiffeners, are also examined if they accurately estimate the ultimate strength. Through comparison of the estimated results with the FEM results, it has been concluded that PULS and modified FYH formulas fundamentally give good estimation of the ultimate strength of stiffened panels under longitudinal thrust.

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