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Research on parameter-free shape and material optimization method for ultra light weight design of thin plate structures

Research Project

Project/Area Number 18K03853
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 InstitutionToyota Technological Institute

Principal Investigator

Shimoda Masatoshi  豊田工業大学, 工学(系)研究科(研究院), 教授 (00350570)

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: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2018: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords形状最適化 / トポロジー最適化 / 軽量化 / 複合材料 / ポーラス構造 / シェル構造 / 最適設計 / マルチスケール / マルチマテリアル / 形状最適化手法 / 繊維配向角 / FRP積層シェル / H1勾配法 / 骨組構造 / 均質化法 / H1勾配法 / ミクロ構造 / マクロ構造 / FRP複合材料 / 配向角最適化 / 変分法 / 関数空間の勾配法 / 構造最適設計 / サンドイッチ構造 / 最適設計法 / 薄板構造体 / 形態・材料最適化 / パラメータフリー / 超軽量化
Outline of Final Research Achievements

In the creation of things, especially in the development of vehicles, there is a need for drastic weight reduction of structures. It is said that the conventional weight reduction by one material is near the limit, and the multi-material structure that arranges the material in the right place is attracting attention.
In this study, we targeted multi-layer thin plate structures including FRP and cell structures (such as porous materials, lattice structures), which are indispensable for multi-material structures. We worked on the development of the optimum design method for obtaining the overall shape, the material orientation of each layer of FRP, and the shape of the cell structure. We have constructed a solution based on the distributed-parameter system to handle this ultra-large-scale design problem in a unified and efficient manner, and succeeded in developing an ultra-lightweight structural design method that can maximize the material performance of the multi-material structure.

Academic Significance and Societal Importance of the Research Achievements

FRPや多孔質材料からなる多層薄板構造体に対して、これまでにない究極の軽量化のための最適設計法を示した。従来のパラメトリック手法ではなく、関数空間で解を求める分布系の解法であるため、大規模設計問題を効率的に解くことができる。そこではFRPの最適繊維配向を連続自由曲線として求めることに初めて成功し、曲率のコントロールも可能にした。また、コア部のポーラス構造の孔形状やラチス構造の部材形状の最適化法も新たに提案した。
複雑、且つ超大規模な最適設計問題の解法の開発はこれまで解けなかった問題への対応を可能にしたばかりでなく、設計者に最適解の知見を与え、経験の浅い設計者への支援システムにもなる。

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

    (32 results)

All 2022 2021 2020 2019 2018

All Journal Article (9 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 9 results,  Open Access: 3 results) Presentation (22 results) (of which Int'l Joint Research: 8 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Numerical and experimental study on optimization of distributed material-orientation for frequency response of CFRP shell structures2022

    • Author(s)
      Masatoshi Shimodaa, Ryosuke Tsukiharab, Kazuhiko Shima
    • Journal Title

      Composite Structures

      Volume: On line Pages: 115697-115697

    • DOI

      10.1016/j.compstruct.2022.115697

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A unified simultaneous shape and topology optimization method for multimaterial laminated shell structures2021

    • Author(s)
      Masatoshi Shimoda, Hirotaka Nakayama, Shota Suzaki, Ryo Tsutsumi
    • Journal Title

      Structural and Multidisciplinary Optimization

      Volume: 64 Issue: 6 Pages: 3569-3604

    • DOI

      10.1007/s00158-021-03039-2

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Free Material orientation design for tailoring vibration eigenvalues of CFRP shell structures2021

    • Author(s)
      月原僚佑,下田昌利
    • Journal Title

      Transactions of the JSME (in Japanese)

      Volume: 87 Issue: 895 Pages: 20-00429-20-00429

    • DOI

      10.1299/transjsme.20-00429

    • NAID

      130008003247

    • ISSN
      2187-9761
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Shape optimization of periodic-microstructures for stiffness maximization of a macrostructure2021

    • Author(s)
      Minami Fujioka, Masatoshi Shimoda, Musaddiq Al Ali
    • Journal Title

      Composite Structures

      Volume: Available online Pages: 113873-113873

    • DOI

      10.1016/j.compstruct.2021.113873

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Minimization of maximum failure criterion of laminated composite shell structure by optimizing distributed-material orientation2020

    • Author(s)
      Masatoshi Shimoda, Yoshiaki Muramatsu and Ryosuke Tsukihara
    • Journal Title

      Structural and Multidisciplinary Optimization

      Volume: On line Issue: 4 Pages: 1547-1571

    • DOI

      10.1007/s00158-019-02435-z

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Multi-scale shape optimization method for designing a macrostructure with periodic-microstructures using inverse homogenization method and H<sup>1</sup> gradient method2019

    • Author(s)
      加藤匠,藤岡みなみ,下田昌利
    • Journal Title

      Transactions of the JSME (in Japanese)

      Volume: 85 Issue: 880 Pages: 19-00279-19-00279

    • DOI

      10.1299/transjsme.19-00279

    • NAID

      130007772964

    • ISSN
      2187-9761
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Material-orientation optimization for tailoring thermal deformation of laminated composite shell structures using a parameter-free approach2019

    • Author(s)
      Masatoshi Shimoda, Yoshiaki Muramatsu and Motoki Umemura
    • Journal Title

      Bulletin of the JSME, Journal of Advanced Mechanical Design, Systems, and Manufacturing

      Volume: 13-4

    • NAID

      130007753825

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Parameter-free optimization of material orientation for high performance composite shell structures2019

    • Author(s)
      Masatoshi Shimoda and Yoshiaki Muramatsu
    • Journal Title

      Proceedings of IX ECCOMAS Thematic Conference on Smart Structures and Materials (SMART 2019)

      Volume: なし

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Distributed-parametric optimization approach for free-orientation of laminated shell structures with anisotropic materials2019

    • Author(s)
      Yoshiaki Muramatsu, Masatoshi Shimoda
    • Journal Title

      Structural and Multidisciplinary Optimization

      Volume: on line Issue: 6 Pages: 1-20

    • DOI

      10.1007/s00158-018-2163-4

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Material Orientation Optimization of Laminated Shell Structure for Frequency Response Problem2021

    • Author(s)
      Ryosuke Tsukihara, Masatoshi Shimoda
    • Organizer
      14th World Congress of Structural and Multidisciplinary Optimization
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Deployment optimization method for designing pre-form of DFRP shell structures with free material-orientation2021

    • Author(s)
      Motoki Umemura, Masatoshi Shimoda, Katsuharu Yoshikawa
    • Organizer
      ICCS24 24th International Conference on Composite Structures
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 最適材料配向を持つCFRP板の構造特性の試験評価2021

    • Author(s)
      月原僚佑,下田昌利,志摩和彦,大橋功,加藤大貴
    • Organizer
      日本機械学会M&M2021材料力学カンファレンス
    • Related Report
      2021 Annual Research Report
  • [Presentation] CFRPシェル構造体の振動固有値設計問題に対する材料配向最適化手法2020

    • Author(s)
      月原僚佑,下田昌利
    • Organizer
      日本機械学会2020年度年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 逆均質化法を用いた3次元ミクロ構造の形状同定2020

    • Author(s)
      下田昌利,藤岡みなみ,加藤匠
    • Organizer
      日本機械学会2020年度年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 離散的構造の創成を目的としたシェル構造体の形状最適設計2020

    • Author(s)
      水越祐希,下田昌利
    • Organizer
      日本機械学会CMD2020計力スクウェア研究報告集
    • Related Report
      2020 Research-status Report
  • [Presentation] シェル構造体の周波数応答問題に対する材料配向最適化手法2020

    • Author(s)
      月原僚佑,下田昌利
    • Organizer
      日本機械学会CMD2020計力スクウェア研究報告集
    • Related Report
      2020 Research-status Report
  • [Presentation] マクロ構造のコンプライアンス最小化を目的とする内部周期ミクロ構造の形状最適化2020

    • Author(s)
      藤岡みなみ,下田昌利
    • Organizer
      日本機械学会第30回設計工学・システム部門講演会講演論文集
    • Related Report
      2020 Research-status Report
  • [Presentation] CFRPシェルの力学的に適切な平面展開手法の開発2020

    • Author(s)
      梅村元稀,下田昌利,藤江文明,吉川勝治,牧田義博
    • Organizer
      日本機械学会第30回設計工学・システム部門講演会講演論文集
    • Related Report
      2020 Research-status Report
  • [Presentation] Optimum Shape and Topology Design of Shell Structures by H1 Gradient Method2019

    • Author(s)
      Masatoshi Shimoda, Shota Suzaki and Hirotaka Nakayama
    • Organizer
      IASS Annual Symposium 2019 - Structural Membranes 2019 Form and Force
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Unified Approach with H1 Gradient Method for Shape and Topology Optimization of Shell Structures2019

    • Author(s)
      Masatoshi Shimoda and Shota Suzaki
    • Organizer
      Asia Pacific Congress on Computational Mechanics (APCOM 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Shape Optimization Method for Shell Structure with Ridges2019

    • Author(s)
      Yuki Mizukoshi and Masatoshi Shimoda
    • Organizer
      Asia Pacific Congress on Computational Mechanics (APCOM 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Free material-orientation design for high stiffness composite shell structure using a parameter-free optimization method2019

    • Author(s)
      Masatoshi Shimoda and Yoshiaki Muramatsu
    • Organizer
      KSME-JSME Joint Symposium on Computational Mechanics & CAE 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 異種材料を用いた三次元構造体のマルチスケール最適化2019

    • Author(s)
      加藤匠,下田昌利
    • Organizer
      日本機械学会2019 年度年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] CFRP複合構造の固有振動問題に対する形状最適設計手法の開発2019

    • Author(s)
      史金星,下田昌利,酒井忍
    • Organizer
      日本機械学会第29回設計工学・システム部門講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 稜線の生成を含むシェル構造体の形状最適設計2019

    • Author(s)
      水越祐希,下田昌利
    • Organizer
      日本機械学会第29回設計工学・システム部門講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Shape and Topology Optimization Method for Designing a Shell Structure with Multi-materials2018

    • Author(s)
      Masatoshi Shimoda, Hirotaka Nakayama
    • Organizer
      The 9th International Conference on Computational Methods (ICCM2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Novel Non-Parametric Optimization Method for Free-Orientation of a Laminated Composite Shell Structure for Tailoring Thermal Deformation2018

    • Author(s)
      Yoshiaki Muramatsu, Masatoshi Shimoda
    • Organizer
      The 13th World Congress on Computational Mechanics (WCCM2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] マルチマテリアル多層シェルの形状・トポロジー同時最適化2018

    • Author(s)
      下田昌利,中山展空
    • Organizer
      日本機械学会第31回計算力学講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] 強度最大化問題における積層シェル構造体の自由配向のための最適化手法2018

    • Author(s)
      村松吉晃,下田昌利
    • Organizer
      日本機械学会第31回計算力学講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] 逆均質化法を用いた構造体のマルチスケール最適化2018

    • Author(s)
      加藤匠,下田昌利
    • Organizer
      日本機械学会第28回設計工学・システム部門講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] 熱変形規定問題における積層シェル構造体の自由配向のための最適化手法2018

    • Author(s)
      村松吉晃,下田昌利
    • Organizer
      日本機械学会2018年度年次大会
    • Related Report
      2018 Research-status Report
  • [Patent(Industrial Property Rights)] 3次元繊維強化複合材料シェル構造物のプリフォームに適した平面展開データを作成する方法2020

    • Inventor(s)
      下田昌利,梅村元稀,吉川勝治
    • Industrial Property Rights Holder
      下田昌利,梅村元稀,吉川勝治
    • Industrial Property Rights Type
      特許
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report

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

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