Simulation-Based Strength Evaluation of Aged Ship and Marine Structures

• Project/Area Number: 17206086
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Naval and maritime engineering
• Research Institution: Yokohama National University
• Principal Investigator: SUMI Yoichi Yokohama National University, 大学院・工学研究院, 教授 (80107367)
• Co-Investigator(Kenkyū-buntansha): KAWAMURA Yasumi 横浜国立大学, 大学院・工学研究院, 教授 (50262407) ; WADA Taishi 横浜国立大学, 大学院・工学研究院, 准教授 (60359700)
• Project Period (FY): 2005 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥47,710,000 (Direct Cost: ¥36,700,000、Indirect Cost: ¥11,010,000); Fiscal Year 2008: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000); Fiscal Year 2007: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000); Fiscal Year 2006: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000); Fiscal Year 2005: ¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
• Keywords: 海上安全 / 船舶海洋工学 / 破壊力学 / 疲労 / 腐食 / シミュレーション工学 / 長寿命化 / 疲労き裂伝播 / 溶接残留応力 / 数値シミュレーション / 残留塑性域モデル / 腐食ピット / 強度劣化 / 変形能劣化 / エネルギー吸収 / 船舶工学 / き裂管理 / 機械材料・材料力学 / 構造解析

Research Abstract

船舶海洋構造物の経年劣化の主要メカニズムである疲労き裂の成長と腐食による強度・延性低下について数値シミュレーション手法を確立するとともに開発手法の妥当性を実験的に検証した。疲労き裂伝播シミュレーションについてはコンテナ船疲労危険部位の評価に適用できることが示され、その実用性が実証された。腐食による経年劣化に関しては、その延性低下のメカニズムが、実験および数値計算により初めて定量的に明らかにされた。

Research Products

• [Journal Article] 変動荷重を受ける溶接継手の疲労き裂伝播予測法 (2008)
  • Author(s): 毛利雅志、角洋一、伊藤友一
  • Journal Title: 日本船舶海洋工学会論文集 7 Pages: 259-270
  • NAID: 110006965139
  • Peer Reviewed
• [Journal Article] Strength and deformability of corroded steel plates estimated by replicated specimens (2008)
  • Author(s): Y. Sumi
  • Journal Title: Journal of Ship Production 24-3 Pages: 161-167
  • Peer Reviewed
• [Journal Article] A computational approach for fatigue crack propagation in ship structures under random sequence of clustered loading (2008)
  • Author(s): T. Okawa and Y. Sumi
  • Journal Title: Journal of Marine Science and Technology 13-4 Pages: 416-427
  • Peer Reviewed
• [Journal Article] 変動荷重を受ける溶接継手の疲労き裂伝播予測法 (2008)
  • Author(s): 毛利雅志, 角洋一, 伊藤友一
  • Journal Title: 日本船舶海洋工学会論文集 7 Pages: 259-270
  • NAID: 110006965139
  • Peer Reviewed
• [Journal Article] Strength and deformability of corroded steel plates est imated by replicated specimens (2008)
  • Author(s): Y. Sumi
  • Journal Title: Journal of Ship Production 24-3 Pages: 161-167
  • Peer Reviewed
• [Journal Article] A computational approach for fatigue crack propagation in ship structures under random sequence of clustered loading (2008)
  • Author(s): T. Okawa, Y. Sumi
  • Journal Title: Journal of Marine Science and Technology 13-4 Pages: 416-427
  • Peer Reviewed
• [Journal Article] 余寿命便益評価に基づく船体構造の保守管理手法に関する研究 (2007)
  • Author(s): 川村恭己, 西本匡伸, 角洋一
  • Journal Title: 日本船舶海洋工学会論文集 6 Pages: 361-369
  • NAID: 110006614156
  • Peer Reviewed
• [Journal Article] Simulation-based fatigue crack management of ship structural details applied to longitudinal and transverse connections (2007)
  • Author(s): T. Okawa
  • Journal Title: Marine Structures 19 Pages: 217-240
  • Peer Reviewed
• [Journal Article] 余寿命便益評価に基づく船体構造の保守管理手法に関する研究 (2007)
  • Author(s): 川村恭己
  • Journal Title: 日本船舶海洋工学会 6 Pages: 361-369
  • NAID: 110006614156
  • Peer Reviewed
• [Journal Article] Simulation-based fatigue crack management of ship structural details applied to longitudinal and transverse connetions (2007)
  • Author(s): T.Okawa, Y.Sumi, M.Mohri
  • Journal Title: Marine Structures (in press) Pages: 24-24
• [Journal Article] Simulation-based fatigue crack management of ship structural details applied to longitudinal and transverse connections (2006)
  • Author(s): T. Okawa, Y. Sumi, and M. Mohri
  • Journal Title: Marine Structures 19 Pages: 217-240
  • NAID: 120001749202
  • Peer Reviewed
• [Journal Article] 表面形状の再現加工による腐食鋼板の引張強度と変形能の解明 (2006)
  • Author(s): 角洋一、山村暢隆、山室佑介
  • Journal Title: 日本船舶海洋工学会論文集 4 Pages: 239-245
  • NAID: 110006163645
  • Peer Reviewed
• [Journal Article] 腐食ピットの確率モデルによる再現腐食表面形状を有する鋼板の引張試験 (2006)
  • Author(s): 中井達郎、角洋一、斉木幸太郎、山本規雄
  • Journal Title: 日本船舶海洋工学会論文集 4 Pages: 246-255
  • Peer Reviewed
• [Journal Article] 変動振幅荷重を受ける構造体の疲労き裂伝播シミュレーシ ョン-き裂開閉口モデルを結合した自 動き裂進展解析システムの開発 (2006)
  • Author(s): 大川鉄平、角洋一
  • Journal Title: 日本船舶海洋工学会論文集 4 Pages: 269-276
  • Peer Reviewed
• [Journal Article] 変動振幅荷重を受ける構造体の疲労き裂伝播シミュレーション (2006)
  • Author(s): 大川鉄平, 角洋一
  • Journal Title: 日本船舶海洋工学会論文集 4 Pages: 269-276
• [Journal Article] 表面形状の再現加工による腐食平板の引張強度と変形能の解明 (2006)
  • Author(s): 角洋一, 山村暢隆, 山室佑介
  • Journal Title: 日本船舶海洋工学会論文集 4 Pages: 239-245
• [Journal Article] 腐食ピットの確率モデルによる再現腐食表面形状を有する鋼材の引張試験 (2006)
  • Author(s): 中井達郎, 角洋一, 斉木幸太郎, 山本規雄
  • Journal Title: 日本船舶海洋工学会論文集 4 Pages: 247-255
  • NAID: 110006163646
• [Journal Article] 船体縦通材の疲労き裂伝播に関する研究-3次元板骨構造の複数き裂同時進展解析 (2005)
  • Author(s): 大川鉄平、角洋一
  • Journal Title: 日本船舶海洋工学会論文集 2 Pages: 331-339
  • NAID: 110004101679
  • Peer Reviewed
• [Journal Article] Information system for structural integrity of ships (2005)
  • Author(s): Y. Kawamura and Y. Sumi
  • Journal Title: Journal of Engng. for Maritime Environment 219 Pages: 93-106
  • Peer Reviewed
• [Journal Article] 船体縦通材の疲労き裂伝播に関する研究 (2005)
  • Author(s): 大川鉄平, 角 洋一, 毛利雅志, 川村恭己
  • Journal Title: 日本船舶海洋工学会論文集 2 Pages: 331-339
• [Journal Article] 3次元ソリッド解析のための完全自動の六面体メッシュ生成手法の研究 (2005)
  • Author(s): 川村恭己, Md.shahidul Islam, 角洋一
  • Journal Title: 日本船舶海洋工学会論文集 2 Pages: 341-350
• [Journal Article] Information system for structural integrity of ships (2005)
  • Author(s): Y.Kawamura, Y.Sumi
  • Journal Title: Journal of Engineering for Maritime Environment 219-M2 Pages: 93-106
• [Presentation] Numerical simulation of strength and deformability of steel plates with surface pits and replicated corrosion-surface (2009)
  • Author(s): Md. Mobesher Ahmmad and Y. Sumi
  • Organizer: MARSTRUCT 2009
  • Place of Presentation: Lisbon
• [Presentation] A study on a method for maintenance of ship structures considering remaining life benefit (2009)
  • Author(s): Y. Kawamura, Y. Sumi and M. Nishimoto
  • Organizer: MARSTRUCT 2009
  • Place of Presentation: Lisbon
• [Presentation] Measurement of true stress-strain and its application to assess the strength and deformability of steel plates with surface pits and replica for general corrosion (2008)
  • Author(s): Md. Mobesher Ahmmad and Y. Sumi
  • Organizer: 日本船舶海洋工学会東部支部秋季講演会
  • Place of Presentation: 東京
  • Year and Date: 2008-11-25
• [Presentation] Measurement of true stress-strain and its application to assess the strength and deformability of steel plates with surface pits and rep1ica for general corrosion (2008)
  • Author(s): Md. Mobesher Ahmmad, Y. Sumi
  • Organizer: 日本船舶海洋工学会平成20年度東部支部秋季講演会
  • Place of Presentation: メルパルク東京
  • Year and Date: 2008-11-25
• [Presentation] Computational approach for fatigue crack propagation in ship structures under random clustered loading (2008)
  • Author(s): Y. Sumi
  • Organizer: XXII International Congress of Theoretical and Applied Mechanics
  • Place of Presentation: Adelaide, Australia
• [Presentation] Computational approach for fatigue crack management in ship structures under random sequence of clustered loading (2007)
  • Author(s): Y. Sumi
  • Organizer: The 21st Asian-Pacific Technical Exchange and Advisory Meeting on Marine Structures
  • Place of Presentation: Yokohama
• [Presentation] Strength and deformability of corroded steel plates estimated by replicated specimens (2007)
  • Author(s): Y. Sumi
  • Organizer: 10th International Symposium on Practical Design of Ships and Other Floating Structures
  • Place of Presentation: Houston Texas, USA
• [Presentation] Computational approach for fatigue crack management in ship structures under random sequence of clustered loading (2007)
  • Author(s): Y. Sumi
  • Organizer: The 21st Asian-Pacific Technical Exchange and Advisory Meeting on Marine Structures
  • Place of Presentation: Yokohama, Japan
• [Presentation] 検査情報を考慮した寿命便益評価に基づく船舶の保守管理法について (2007)
  • Author(s): 川村恭己
  • Organizer: 日本船舶海洋工学会春季講演会
  • Place of Presentation: 東京
• [Presentation] バルクキャリアーの航路による余寿命便益の違いについて (2007)
  • Author(s): 浅友紀
  • Organizer: 日本船舶海洋工学会春季講演会
  • Place of Presentation: 東京
• [Presentation] 変動荷重下における溶接継手のき裂進展解析手法の開発と実験による検証 (2007)
  • Author(s): 毛利雅志
  • Organizer: 日本船舶海洋工学会東部支部秋季講演会
  • Place of Presentation: 東京
• [Presentation] ランダム荷重下における船体構造の疲労寿命評価 (2007)
  • Author(s): 大川鉄平
  • Organizer: 日本船舶海洋工学会東部支部秋季講演会
  • Place of Presentation: 東京
• [Presentation] Crack paths from weld details in three-dimensional plate structures (2006)
  • Author(s): Y. Sumi and T. Okawa
  • Organizer: The 2nd International Conference of Crack Paths(CP 2006)
  • Place of Presentation: Parma, Italy
• [Book] Numerical simulation of strength and deformability of steel plates with surface pits and replicated corrosion-Surface, in Analysis and Design of Marine Structures (2009)
  • Author(s): Md. Mobesher Ahmmad, Y. Sumi
  • Publisher: CRC Press, Taylor & Francis Group
• [Book] A study on a method for maintenance of ship structures considering remaining life benefit, in Analysis and Design of Marine Structures (2009)
  • Author(s): Y. Kawamura, Y. Sumi, M. Nishimoto
  • Publisher: CRC Press, Taylor & Francis Group
• [Remarks] Fatigue Crack Management of Ship Structures under Random Sequence of Clustered Loading, Maritime Engineering Seminar, April 30, 2009, Technical University of Denmark
• [Remarks] Crack Propagation under random sequence of clustered loading, Solid Mechanics Seminar, April 28, 2009, D'Alembert Institute, University of Pierre and Marie Curie(Paris VI).
• [Remarks]
  • URL: http://kamome.lib.ynu.ac.jp/dspace/handle/10131/28/items-by-author?author=Sumi%2C+Yoichi
• [Patent(Industrial Property Rights)] き裂進展解析方法 (2008)
  • Inventor(s): 角洋一、毛利雅志
  • Industrial Property Rights Holder: 横浜国立大学・(株)IHI
  • Industrial Property Number: 2008-100524
  • Acquisition Date: 2008-04-08
• [Patent(Industrial Property Rights)] き裂進展解析方法 (2008)
  • Inventor(s): 角洋一 毛利雅志
  • Industrial Property Rights Holder: 横浜国立大学, (株)IHI
  • Industrial Property Number: 2008-100524
  • Filing Date: 2008-04-08