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A Study on Reliablility Assessment of Plate Structures Based on Ultimate Strength Analysis

Research Project

Project/Area Number 02452184
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 船舶構造・建造
Research InstitutionThe University of Osaka Prefecture

Principal Investigator

OKADA Hiroo  University of Osaka Prefecture, College of Engineering, Professor, 工学部, 教授 (90081398)

Co-Investigator(Kenkyū-buntansha) KISHI Mitsuo  University of Osaka Prefecture, College of, Lecturer, 工学部, 講師 (00145814)
KITAURA Ken-ichi  University of Osaka Prefecture, College of, Lecturer, 工学部, 講師 (00081399)
OKAMURA Yoichiro  University of Osaka Prefecture, College of, Associate Professor, 工学部, 助教授 (80081397)
MUROTSU Yoshisada  University of Osaka Prefecture, College of Engineering, Professor, 工学部, 教授 (50081386)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥5,800,000 (Direct Cost: ¥5,800,000)
Fiscal Year 1991: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1990: ¥4,200,000 (Direct Cost: ¥4,200,000)
KeywordsSpatial plate structures / linearized failure condition / plastic node method / buckling collapse / ultimate collapse modes / structural reliability / ship's hull structures / longitudinal bending strength / 構造破損モ-ド / 破損確率 / 分岐限界法
Research Abstract

This study is concerned with the ultimate strength analysis and reliability analysis of thin plate structures and ship's hull girder, which ar-e comm of the spatial nubrane elements and subjected to combined static loads and extreme wave loads.
The linearized failum condition of an element is firest in&Wuced, which takes accomt of the yielding and buckling collapse under the plane stress condition. The failure criterion facilitates the generation of safety margins and the calculation of failure probabilities.
Structural failure is defined as the generation of large deformation due to collapse.
The socalled bmh-and-bound method is applied to select the probabilistically dominant failure modes, which saves the commbicnal efforts to perform a reliability analysis on large-scale structures.
Finally, the proposed methods are applied to a I cylinder under lateral loads &id spatial structures idealized for wdeling maln hull girders of an oil tanker and a bulk carrier under two loading conditions. Through comparison between numerical examples and research results due to hull girder models, the applicability of proposed methods is dewnstmted.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report

Research Products

(9 results)

All Other

All Publications (9 results)

  • [Publications] 岡田 博雄,室津 義定,上山 圭司,原田 実: "塑性節点法による薄板構造の最終崩壊モ-ドの生成と信頼性評価に関する研究" 第7回 信頼性ワ-クショップ資料集(九州大学工学部土木工学科). 13-18 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 岡田 博雄,室津 義定,上山 圭司,原田 実: "塑性節点法による立体薄板構造の最終崩壊モ-ドの生成とそれに基づく信頼性評価の一方法" 第10回海洋工学シンポジウム(日本造船学会). 207-214 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 岡田 博雄,室津 義定他3名: "立体薄板構造の最終崩壊モ-ドの生成とそれに基づく信頼性評価の一方法" 日本造船学会論文集. 170. 483-491 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Hiroo OKADA, Yoshisada MUROTSU, Keiji UEYAMA and Minoru HARADA: "A Study on Reliability Assessment of plates under In-Plane Loads Through Generation of Ultimate Collapse Modes by Using a Plastic Node Method" Proc. of 7th Reliability Workshop, Kyusyu Unicersity. 13-18 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Hiroo OKADA, Yoshisada MUROTSU, Keiji UEYAMA and Minoru HARADA: "A Method for Reliability Assessment of Thin Plate Structures Through Automatic Generation of Ultimate Collapse Modes by Using a Plastic Node Method" Proc. of 10th Marine Technology Symposium, The Society of Naval Architects of Japan. 207-214 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Hiroo OKADA, Yoshisada MUROTSU, Keiji UEYAMA, Minoru HARADA and Kazuya KONDO: "A Method for Reliability Assessment of Spatial Plate Structures Through Automatic Generation of Ultimate Collapse Modes" Journal of the Society of Naval Architects of Japan. 170. 483-491 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 岡田 博雄,室津 義定 他3名: "立体薄板構造の最終崩壊モ-ドの生成とそれに基づく信頼性評価の一方法" 日本造船学会論文集. 170. 483-491 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 岡田 博雄,室津 義定,ほか2名: "塑性節点法による立体薄板構造の最終崩壊モ-ドの生成とそれに基づく信頼性評価の一方法" 第10回海洋工学シンポジウム(日本造船学会). 207-214 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 岡田 博雄,室津 義定,ほか2名: "立体薄板モデルによる船体主構造の最終崩壊モ-ドの生成とそれに基づく信頼性評価の一方法" 日本造船学会論文集. (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-03-31   Modified: 2016-04-21  

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