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Development of multi-scale and multi-physics integrative analysis system for multi-material structures by data assimilation

Research Project

Project/Area Number 18K03849
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 18010:Mechanics of materials and materials-related
Research InstitutionTokyo City University

Principal Investigator

Kishimoto Yoshinao  東京都市大学, 理工学部, 准教授 (20581789)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords機械材料・材料力学 / 逆問題 / マルチマテリアル / マルチスケール / マルチフィジックス / データ同化 / 界面剛性 / 界面強度
Outline of Final Research Achievements

This study has developed the analysis system and investigated the computation accuracy and issues in practical applications. Results of the numerical simulations executed before the hammering test and the current-carrying test have revealed that the interfacial stress distribution could be identified by the natural frequency. The possibility of the identification of the current density distribution depends on the input-output flow of the electric current. The hammering test and the investigation of the influence of inclusions have shown that the analysis system properly works in actual situations. In addition, this study has discussed the simplification of the finite element model for the large-scale simulation.

Academic Significance and Societal Importance of the Research Achievements

接合部のすき間が非常に狭く,その場の応力分布などの物理量を直接測定することが困難であることが,接合部の力学現象を再現するための数値シミュレーションを一層難しくしていた.また,計算に考慮しなければならない接合部の寸法に対して,自動車のボデー全体を対象とするような寸法が非常に大きい数値シミュレーションを実行するには計算対象全体と接合部との相互作用に基づくマルチスケールな解析手法に頼らざるを得ない.当該解析システムの開発を進める過程において種々の数値シミュレーションと打撃試験を実施することで前述の課題を解決するための知見を得た.

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 2020 2019 2018

All Journal Article (5 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] 界面の力学に基づいたねじ締結部の剛性シミュレーション2022

    • Author(s)
      岸本喜直
    • Journal Title

      自動車技術

      Volume: 76 Pages: 50-54

    • Related Report
      2021 Annual Research Report
  • [Journal Article] ねじ締結体の剛性評価2021

    • Author(s)
      岸本喜直
    • Journal Title

      機械設計

      Volume: 65 Pages: 19-23

    • Related Report
      2020 Research-status Report
  • [Journal Article] ねじ締結部界面の剛性を考慮した有限要素法とその検証実験2019

    • Author(s)
      岸本喜直
    • Journal Title

      日本ねじ研究協会誌

      Volume: 50 Pages: 172-179

    • NAID

      40021951951

    • Related Report
      2019 Research-status Report
  • [Journal Article] VIBRATION SIMULATION OF BOLTED JOINTS COMPOSED OF STEEL AND CONCRETE BY FINITE ELEMENT METHOD CONSIDERING INTERFACIAL STIFFNESS2019

    • Author(s)
      岸本喜直, 小林志好, 大塚年久, 小室貫太
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))

      Volume: 75 Issue: 2 Pages: I_13-I_24

    • DOI

      10.2208/jscejam.75.2_I_13

    • NAID

      130007795413

    • ISSN
      2185-4661
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Estimation method of interfacial stiffness of bolted joint in multi-material structure by inverse analysis2019

    • Author(s)
      Yoshinao Kishimoto, Yukiyoshi Kobayashi, Toshihisa Ohtsuka, Akira Matsumoto, Motoi Niizuma
    • Journal Title

      Mechanical Engineering Journal

      Volume: 6 Issue: 3 Pages: 18-00471-18-00471

    • DOI

      10.1299/mej.18-00471

    • NAID

      130007663719

    • ISSN
      2187-9745
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Interfacial element for finite element modal analysis of bolted joints2021

    • Author(s)
      Yoshinao Kishimoto, Yukiyoshi Kobayashi, Toshihisa Ohtsuka, Takuya Shinohara, Naoki Jimbo
    • Organizer
      14th World Congress in Computational Mechanics and ECCOMAS Congress 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] ボルト締結と接着を併用した接合体における界面剛性のマルチスケールモデリング2020

    • Author(s)
      岸本喜直, 小林志好, 大塚年久, 神保直紀, 篠原拓也
    • Organizer
      日本機械学会2020年度年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Inverse problems in interfacial mechanics of multi-material structures2020

    • Author(s)
      Yoshinao Kishimoto
    • Organizer
      The 6th Symposium on Theoretical and Applied Mechanics (Kick-Off Symposium of Japan Consortium for Theoretical and Applied Mechanics)
    • Related Report
      2020 Research-status Report
  • [Presentation] 締結部界面の剛性を考慮した有限要素法によるボルト・ナット締結状態の評価に関する研究(プラスチック板と金属板を締結した場合への適用2019

    • Author(s)
      岸本喜直, 小林志好, 大塚年久, 松本爽
    • Organizer
      日本機械学会2019年度年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] トンネル天井板におけるボルト締付力の同定に関する研究(解析手法の有効性の検討)2019

    • Author(s)
      岸本喜直, 小林志好, 大塚年久, 小室貫太
    • Organizer
      第65回理論応用力学講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] マルチマテリアル構造におけるマクロスケールの界面剛性評価に関する研究(界面の輪郭曲線を用いたミクロスケールの有限要素法との比較)2018

    • Author(s)
      岸本喜直, 小林志好, 大塚年久, 松本爽, 新妻基
    • Organizer
      日本機械学会 M&M2018材料力学カンファレンス
    • Related Report
      2018 Research-status Report
  • [Presentation] 逆解析を援用した複合構造における界面の力学モデルの構築とその応用2018

    • Author(s)
      岸本喜直
    • Organizer
      日本機械学会 M&M2018材料力学カンファレンス
    • Related Report
      2018 Research-status Report
    • Invited

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Published: 2018-04-23   Modified: 2023-01-30  

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