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Development of fracture mechanics model for innovative structural-material crack arrest design

Research Project

Project/Area Number 17H01354
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Naval and maritime engineering
Research InstitutionThe University of Tokyo

Principal Investigator

AIHARA SHUJI  東京大学, 大学院工学系研究科(工学部), 名誉教授 (10373599)

Co-Investigator(Kenkyū-buntansha) 鈴木 克幸  東京大学, 大学院工学系研究科(工学部), 教授 (10235939)
柴沼 一樹  東京大学, 大学院工学系研究科(工学部), 准教授 (30611826)
川畑 友弥  東京大学, 大学院工学系研究科(工学部), 准教授 (50746815)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥44,330,000 (Direct Cost: ¥34,100,000、Indirect Cost: ¥10,230,000)
Fiscal Year 2019: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
Fiscal Year 2018: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
Fiscal Year 2017: ¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Keywords破壊力学 / 脆性破壊 / 信頼性設計 / 有限要素法 / き裂伝播 / 鉄鋼材料 / 微視力学 / 数値モデル / ミクロモデル / 高張力鋼 / アレスト / 脆性亀裂伝播 / アレスト靭性 / 構造最適化 / マルチスケール
Outline of Final Research Achievements

Recent steep increase in marine transportation has necessitated large scale ship structure which can carry more than 10,000 containers. Prevention of brittle crack propagation in these structure is very important, but basic mechanisms of the brittle crack propagation and arrest behaviors were not clarified. In the present study, experiment and numerical simulations for fast propagating crack were conducted. As a result, it has been made possible to describe crack propagation and arrest behaviors of a long crack, more than 1 meter. Furthermore, steel grain-size level analyses were carried out. As a result, microstructure effect on crack propagation was quantitatively clarified.

Academic Significance and Societal Importance of the Research Achievements

近年の世界的な経済規模拡大に伴い、海上物流量が飛躍的に増大し、1万個を超えるコンテナを輸送できる超大型コンテナ船が建造されるようになった。これら船舶においては脆性破壊を防止することが極めて重要であるが、高速で伝播する脆性き裂の挙動には未解明な点が多く、大型コンテナ船の脆性き裂アレスト設計やアレスト性能に優れた船体用鋼材の開発を合理的に行うことが困難であった。本研究成果はこれらの要求に直接的に適用できるものであり、本研究者らはアレスト靭性の評価試験方法のISO規格策定や船体アレスト設計の策定にも関与してきた。本研究はこれらの社会貢献に直接的に役立つものである。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (18 results)

All 2020 2019 2018

All Journal Article (12 results) (of which Peer Reviewed: 10 results) Presentation (6 results) (of which Int'l Joint Research: 6 results)

  • [Journal Article] Historical review of research on brittle crack propagation arresting technology for large welded steel structures developed in Japan with the development of Kca parameters2020

    • Author(s)
      Tomoya Kawabata, Takehiro Inoue, Tetsuya Tagawa, Tsutomu Fukui, Yasuhito Takashima, Kazuki Shibanuma and Shuji Aihara
    • Journal Title

      Marine Structures

      Volume: 71 Pages: 102737-102737

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Brittle crack propagation acceleration in a single crystal of a 3pct silicon-Fe alloy, Frattura ed Integrità Strutturale2019

    • Author(s)
      Tomoya Kawabata, Noritaka Nakamura, Shuji Aihara
    • Journal Title

      Frattura ed Integrita Strutturale

      Volume: 47 Issue: 2 Pages: 416-424

    • DOI

      10.3221/igf-esis

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Controlling factors for roughness increases on cleavage fracture surfaces and crack branching in polycrystalline steel2019

    • Author(s)
      Tomoya Kawabata, Fumiaki Tonsho, Yuki Nishizono, Noritaka Nakamura, Yasuhito Takashima
    • Journal Title

      Theoretical and Applied Fracture Mechanics

      Volume: 100 Pages: 171-180

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A physics based model to simulate brittle crack arrest in steel plates incorporating experimental and numerical evidences2019

    • Author(s)
      Fuminori Yanagimoto, Kazuki Shibanuma, Katsuyuki Suzuki, Toshiyuki Matsumoto
    • Journal Title

      Engineering Fracture Mechanics

      Volume: 221 Pages: 106660-106660

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Governing factors of the local tensile stress in the vicinity of a rapidly propagating crack tip in elastic-viscoplastic solids2019

    • Author(s)
      Fuminori Yanagimoto, Kazuki Shibanuma, Katsuyuki Suzuki, Toshiyuki Matsumoto
    • Journal Title

      Engineering Fracture Mechanics

      Volume: 218 Pages: 106548-106548

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Contribution of grain size to resistance against cleavage crack propagation in ferritic steel2019

    • Author(s)
      Fuminori Yanagimoto, Takuhiro Hemmi, Yuta Suzuki, Yukihito Takashima, Tomoya Kawabata, Kazuki Shibanuma
    • Journal Title

      Acta Materialia

      Volume: 177 Pages: 96-106

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A model of cleavage crack propagation in a BCC polycrystalline solid based on the extended finite element method2019

    • Author(s)
      Kazuki Shibanuma, Yuta Suzuki, Kazuya Kiriyama, Katsuyuki Suzuki, Hiroyuki Shirahata
    • Journal Title

      Acta Materialia

      Volume: 176 Pages: 232-241

    • Related Report
      2019 Annual Research Report
  • [Journal Article] A simplified method for evaluation of brittle crack arrest toughness of steels in scaled-down bending tests2019

    • Author(s)
      Yuki Nishizono, Shuji Aihara, Tomoya Kawabata, Teppei Okawa
    • Journal Title

      Engineering Fracture Mechanics

      Volume: 印刷中 Pages: 99-111

    • DOI

      10.1016/j.engfracmech.2019.03.047

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Local stress evaluation of rapid crack propagation in finite element analyses2018

    • Author(s)
      F. Yanagimoto, K. Shibanuma, Y. Nishioka, Y. Shirai, K. Suzuki, T. Matsumoto
    • Journal Title

      International Journal of Solids and Structures

      Volume: 144-145 Pages: 66-77

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Local stress in the vicinity of the propagating cleavage crack tip in ferritic steel2018

    • Author(s)
      F. Yanagimoto, K. Shibanuma, K. Suzuki, T. Matsumoto, S. Aihara
    • Journal Title

      Materials & Design

      Volume: 144 Pages: 361-373

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Computer simulation of cleavage fracture surface morphologies in steel paltes2018

    • Author(s)
      T. Aikawa, S. Aihara, T. Kawabata, F. Yanagimoto, K. Shibanuma
    • Journal Title

      Procedia Structural Integrity

      Volume: 13 Pages: 104-109

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Development of simplified evaluation method of brittle crack arrest toughness on small-scale bending test in steels2018

    • Author(s)
      Yuki Nishizono, Shuji Aihara, Tomoya Kawabata, Teppei Okawa
    • Journal Title

      Procedia Structural Integrity

      Volume: 13 Pages: 1817-1827

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Consideration on the toughness difference depending on the direction of brittle crack propagation in very thick steel2019

    • Author(s)
      Taiko Aikawa, Tomoya Kawabata
    • Organizer
      Procedia Structural Integrity
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Relationship between grain size and cleavage crack propagation resistance in ferrite‐pearlite steels2019

    • Author(s)
      Yuta Suzuki, Fuminori Yanagimoto, Takuhiro Hemmi, Ykihito Takashima, Tomoya Kawabata, K. Shibanuma
    • Organizer
      ICM13 (13th International Conference on Mechanical Behaviour of Materials), Jun. 11-14, 2019, Melbourne, Australia
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of dynamic mesh superposition method for local tensile stress evaluation2018

    • Author(s)
      K. Kishi, K. Shibanuma, F. Yanagimoto, K. Suzuki, T. Matsumoto
    • Organizer
      The 22nd European Conference on Fracture, Aug. 26-31, 2018, Belgrade, Serbia
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A numerical simulation model of cleavage crack propagation based on 3D XFEM2018

    • Author(s)
      K. Shibanuma, Y. Suzuki, K. Kiriyama, T. Hemmi, H. Shirahata
    • Organizer
      The 22nd European Conference on Fracture, Aug. 26-31, 2018, Belgrade, Serbia
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A numerical simulation model of cleavage crack propagation in steel based on the extended finite element method2018

    • Author(s)
      K. Kiriyama, K. Shibanuma, Y. Suzuki, T. Hemmi, K. Suzuki, S. Aihara
    • Organizer
      the 13th World Congress on Computational Mechanics, Jul.22-27, 2018, New York, USA.
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of simplified evaluation method of brittle crack arrest toughness on small-scale bending test in steels2018

    • Author(s)
      Yuki Nishizono, Tomoya Kawabata and Shuji Aihara
    • Organizer
      22nd European Conference on Fracture - ECF22 26-31. August, 2018, Belgrade, Serbia
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2021-02-19  

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