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A Study on Ultimate Strength of Ship Hull Girder under Slamming

Research Project

Project/Area Number 10650904
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 船舶工学
Research InstitutionOsaka Prefecture University

Principal Investigator

OKADA Hiroo (2000)  Osaka Prefecture University Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (90081398)

正岡 孝治 (1998-1999)  大阪府立大学, 工学部, 講師 (10244659)

Co-Investigator(Kenkyū-buntansha) KITAURA Ken-ichi  Osaka Prefecture University Graduate School of Engineering, Lecturer, 大学院・工学研究科, 講師 (00081399)
MASAOKA Koji  Osaka Prefecture University Graduate School of Engineering, Assoc.Prof., 大学院・工学研究科, 助教授 (10244659)
UEDA Yukio  Kinki University College of Bio-science and Engineering, Professor, 生物理工学部, 教授 (30029037)
岡田 博雄  大阪府立大学, 工学部, 教授 (90081398)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2000: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1999: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1998: ¥2,700,000 (Direct Cost: ¥2,700,000)
KeywordsStiffened plate panels / FEM-aided Smith's method / Ultimate collapse of ship hull girder / Structural reliability / Idealized structural unit method / Progressive collapse / Hydro-elasticity and / or hydro-plasticity / 船体縦曲げ強度 / 水塊の衝突現象 / 最終強度 / モンテラルロシミュレーション / 感度解析 / 二次元流体力 / スラミング / 弧長増分法 / 多自由度従属拘束の手法 / 初期不整
Research Abstract

(1) First, this study deals with estimation methods for the ultimate strength and post ultimate behavior of ship stiffened plate structures under in-plane combined loads using finite element method considering elasto-plastic large deflection effects. Collapse mechanisms of stiffened structures are mainly classified into two collapse modes. One is the overall buckling mode, which means collapse of both stiffeners and panels. And another is local bucking mode, which means collapse of panels or stiffeners locally. To analyze these modes and their interactions, analyzed region is decided in this study. Satisfying the boundary continuity between adjacent structures under combined loads, Multi-freedom Dependent Constraint Method is applied for boundary condition.
(2) Next, this study deals with collapsing behavior and reliability analysis of ship hull girder under longitudinal bending moment. A simplified estimation method is presented for collapsing behavior of ship hull girder under longitudinal bending by using Smith's method. Stress-strain curves of rectangular panels, which are used in Smith's method, are obtained from numerical database based on finite element method considering large deflection and elastic-plastic behavior. This method is applied to reliability analysis and statistical values such as standard deviation and reliability indexes are investigated by Monte Carlo simulation and sensitivity analysis.
(3) Finally, a system is developed for collapsing behavior analysis of ship hull girders under extreme wave loads using a method combined with hydrodynamic force analysis and finite element analysis. The applicability of the system is also investigated through numerical examples applied to a basic box-type girder under extreme wave loads.

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] 河辺寛,正岡孝治: "一般商船の波浪の目視観測精度と波浪荷重について"日本造船学会論文集. 183. 123-131 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Masaoka,H.Okada and Y.Ueda: ""A Rectangular Plate Element" for Ultimate Strength Analysis "Proceedings of 2nd Conf.on Thin-Walled Structures. 469-476 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Masaoka,H.Okada and et al. : "A Simplified Method for Collapse and Reliability Analysis of Thin Plate Structures using Hexahedral Element Models"Proceedings of Plasticity'99 (Cancun, Mexico). 757-760 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 正岡孝治,岡田博雄 他: "複合荷重を受ける船体防撓構造の崩壊強度解析法"関西造船協会誌. 232. 127-134 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Masaoka,H.Okada and Y.Ueda: "Collapsing Behavior of Continuous Rectangular Panels of a Deck Subjected to In-plane Combined Loads"Proceedings of ISOPE 2000 (Seattle, USA). IV. 270-276 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 正岡孝治,岡田博雄 他: "データベースを用いた船体縦曲げ崩壊解析法とそれに基づく信頼性評価に関する研究"関西造船協会誌. 233. 115-121 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Kawabe and K.Masaoka: "Accuracy of Visual Wave Observation from Merchant Ships and Estimated Wave Loads"Journal of the Soc.of Naval Architects of Japan. No.183. 123-131 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Masaoka, H.Okada and Y.Ueda: ""A Rectangular Plate Element" for Ultimate Strength Analysis"Proceedings of 2^<nd> Int.Conf.on Thin-Walled Structures. 469-476 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Masaoka, H.Okada and et al.: "A Simplified Method for Collapse and Reliability Analysis of Thin Plate Structures using Hexahedral Element Models"Proceedings of Plasticity'99 (Cancun, Mexico). 757-760 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Masaoka, H.Okada and Y.Ueda: "A Method for Collapsing Behavior of Marine Plate Structures under Combined Load"Journal of the Kansai Soc.of Naval Architects, Japan. No.232. 127-134 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] "Collapsing Behavior of Continuous Rectangular Panels of Deck Subjected to Inplane Combined Loads"Proceedings of ISOPE 2000 (Seattle, USA). Vol.IV. 270-276 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Masaoka, H.Okada and et al.: "Ultimate Strength and Its Structural Reliability Analysis of Ship Longitudinal Bending Using Numerical Database"Journal of the Kansai Soc.of Naval Architects, Japan. No.233. 115-121 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Masaoka,H.Okada and Y.Ueda: "Collapsing Behavior of Continuous Rectangular Panels of a Deck Subjected to In-plane Combined Loads"Proceedings of ISOPE 2000 (Seattle,USA). IV. 270-276 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 正岡孝治,岡田博雄 他: "データベースを用いた船体縦曲げ崩壊解析法とそれに基づく信頼性評価に関する研究"関西造船協会誌. 233. 115-121 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 佐野淳,池淵哲朗,岡田博雄: "構造と流体の連成を考慮した水塊の衝突現象に関する基礎的研究"関西造船協会 平成13年度春季講演会. (発表予定)(未定). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] A.L. Talavera, K. Masaoka, H. Okada, Y. Murotsu: "A Simplified Method for Collapse and Reliability Analysis of Thin Plate Structures Using Hexahedral Element Models"Proc. of Plasticity '99. 7. 757-760 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 正岡,吉岡,岡田,上田: "複合荷重を受ける船体防撓板構造の崩壊挙動解析法"関西造船協会誌. 232. 127-134 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 正岡,A.L.Talavera,塚本,岡田: "データベースを用いた船体縦曲げ崩壊解析とそれに基づく信頼性評価に関する研究"関西造船協会講演論文集. 13. 133-136 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 正岡,A.L.Talavera,塚本,岡田: "データベースを用いた薄板構造の圧壊強度解析とそれに基づく信頼性評価に関する研究"材料・構造信頼性シンポジウム. 17. 128-133 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 河辺,正岡: "一般商船の波浪の目視観測精度と波浪荷重について" 日本造船学会論文集. 183. 123-131 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Masaoka,H.Okada,Y.Ueda: ""A Rectangulan Plate Elenent"for Ultimate Strength Aralysis" Proc. of Thim-Walled Structures. 2. 469-476 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 正岡,吉岡,岡田,上田: "複合荷重をうける船体防焼板構造の崩懐挙動解析法" 関西造船協会誌. 232(発表予定). (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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