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Development of Stability Assessment Method for HFMI Fatigue Improvement Effect under Ocean Wave Random Loading

Research Project

Project/Area Number 24K01095
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 24020:Marine engineering-related
Research InstitutionOsaka University

Principal Investigator

大沢 直樹  大阪大学, 大学院工学研究科, 教授 (90252585)

Co-Investigator(Kenkyū-buntansha) 麻 寧緒  大阪大学, 接合科学研究所, 教授 (10263328)
武内 崇晃  大阪大学, 大学院工学研究科, 助教 (80899980)
Project Period (FY) 2024-04-01 – 2027-03-31
Project Status Granted (Fiscal Year 2024)
Budget Amount *help
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2026: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2025: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2024: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
KeywordsHFMI / 溶接 / 疲労 / 海洋波ランダム荷重 / 残留応力
Outline of Research at the Start

局所等価応力に基づく変動荷重下のHFMI継手き裂発生寿命推定法と,数値影響係数法に基づくHFMI継手き裂伝播解析法を開発し,実船の変動荷重履歴を模擬した疲労試験で有効性を検証して,改善効果安定性の定量的評価を可能にする.さらにHFMIの施工時期,荷重条件を変化させて疲労寿命を比較し,船舶海洋構造物の疲労設計でHFMI改善効果の安定性を評価するための技術資料を整備する.

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Published: 2024-04-11   Modified: 2024-06-24  

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