Ultimate strength of ship structure and its uncertainty model

船舶结构极限强度及其不确定性模型

• 批准号: 20246126
• 负责人: FUJIKUBO Masahiko
• 金额: $ 15.39万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20246126/
• 关键词: 船体構造; 最終強度; 不確定性; 損傷; リスク解析; 船舶工学; 構造工学; 座屈・最終強度; 理想化構造要素法; 確率モデル

The ultimate strength of ship structures in the damaged as well as intact condition is studied including the uncertainty in the strength. The following achievements were made: (1) The ultimate strength of a continuous stiffened panel with crack damage under combined thrust and lateral pressure were investigated ; (2) The model uncertainty in the prediction of the ultimate longitudinal bending strength of a hull girder using Smith method was quantified ; (3) The Smith method was extended to be applied to the cross section with damages ; (4) ISUM system for the efficient analysis of the ultimate strength of a ship structure with and without damages were developed ; (5) A dynamical model to predict the collapse behavior of a ship hull girder considering the interaction between plastic deformation and fluid forcse was developed and verified by the tank test.

研究了船体结构在完整和损伤状态下的极限强度，并考虑了强度的不确定性。研究了裂纹损伤连续加筋板在推力和侧压联合作用下的极限强度，量化了Smith方法预测船体梁纵向弯曲极限强度的模型不确定性，将Smith方法推广应用于损伤横截面，建立了基于Smith方法的船体梁纵向弯曲极限强度计算模型，并对该模型进行了数值模拟。（4）建立了船体结构极限强度分析的ISUM系统：（5）建立了考虑塑性变形和流体力相互作用的船体船体梁倒塌动力学模型，并通过水池试验进行了验证。

项目成果

A system for Progressive Collapse Anaklysis of Ship's Hull Girder in waves with Combined ISUM/FEM and Wave response Analyses

结合 ISUM/FEM 和波浪响应分析的船体梁在波浪中渐进式倒塌分析系统

• 发表时间: 2009
• 作者: T. Yao;M. Fujikubo;K. Iijima;Z.Y;Pei
• 通讯作者: Pei

リスク評価に基づく船体縦曲げ最終強度の目標安全性の検討

基于风险评估的船体垂向弯曲极限强度目标安全性检验

• 发表时间: 2011
• 期刊: 日本船舶海洋工学会論文集 Vol.13(掲載予定)
• 作者: 飯島一博;藤久保昌彦
• 通讯作者: 藤久保昌彦

Change in Safety Level against Collapse of Ship's Hull Girder in Longitudinal Bending According to Change in Design Criteria

设计规范变化导致船体梁纵向弯曲倒塌安全水平的变化

• 发表时间: 2009
• 作者: K. Iijima;M. Fujikubo
• 通讯作者: M. Fujikubo

Fujikubo : Hydroelasto-plasticity Approach to Predicting the Postultimate Strength Behavior of Ship's Hull Girder in Waves

Fujikubo：预测波浪中船体梁的终极强度行为的水弹塑性方法

• 发表时间: 2011
• 作者: K. Iijima;K. Kimura;W.J. Xu;M.
• 通讯作者: M.

き裂損傷を有する防撓パネルの圧壊挙動に関する研究

裂纹损伤加筋板压溃行为研究

• 发表时间: 2010
• 作者: 柳原大輔;三宅良文
• 通讯作者: 三宅良文