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Robust topology optimization of innovative porous structures by 3D-printer of continuous fiber reinforced plastics

Research Project

Project/Area Number 19H00781
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 22:Civil engineering and related fields
Research InstitutionNagoya University

Principal Investigator

Kato Junji  名古屋大学, 工学研究科, 教授 (00594087)

Co-Investigator(Kenkyū-buntansha) 干場 大也  名古屋大学, 工学研究科, 助教 (80847038)
小橋 真  名古屋大学, 工学研究科, 教授 (90225483)
北根 安雄  京都大学, 工学研究科, 准教授 (10444415)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥47,060,000 (Direct Cost: ¥36,200,000、Indirect Cost: ¥10,860,000)
Fiscal Year 2021: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2020: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Fiscal Year 2019: ¥33,020,000 (Direct Cost: ¥25,400,000、Indirect Cost: ¥7,620,000)
Keywordsトポロジー最適化 / 積層造形 / 3Dプリンター / インフィル構造 / 3D printer / CFRP / 3D purinter / 3Dプリンタ / 3Dプリンター / 繊維補強材料
Outline of Research at the Start

近年,様々な分野において積層造形(3Dプリンター)を活かしたものづくりが本格的に導入されている.そして,その先端テクノロジーが生み出したインフィル構造と呼ばれる多孔質性構造体を導入すると従来構造の約5 倍もの耐荷力を発現するという実験結果が示された.しかし,製作上のばらつきなどの不確かな条件下ではその性能を安定的に引き出すことができなくなることがわかってきた.本研究はその優れた性能を安定的かつ最大限に引き出すために実験によるメカニズムの解明とそれを基にロバストな構造見出す新たなトポロジー最適設計法を構築する.最後にFRP製のインフィル構造に導入して極限性能の発現を目指す.

Outline of Final Research Achievements

In many industries, the introduction of additive manufacturing is being considered. Recently, continuous fiber 3D printer has also been developed and paid attention to its performance. Under such circumstances, surprising experimental results were shown that a structure with a complex shape in which a porous structure formed by additive manufacturing is embedded exhibits a load bearing capacity that is about five times that of a conventional structure. However, under uncertainties such as manufacturing variations and load fluctuations, its performance cannot be stably brought out. Therefore, in this research, in order to bring out the excellent performance stably and to the maximum, we developed a new topology optimum method which can find a robust optimum porous structure.

Academic Significance and Societal Importance of the Research Achievements

将来の生産労働者人口の減少を鑑み、宇宙航空,自動車,機械,建設,医工学の分野において,ロボットや積層造形を活用した革新的なものづくりが検討されているが,その構造はこれまでのものとは大きく異なり,従来型の設計法では力学的に価値ある構造を設計できない.そのため,本研究ではトポロジー最適化理論に基づいて,合理的な構造形状を数理的に求める手法を開発した.開発した手法は,力学性能に優れた構造を生み出すとともに,様々な分野に応用できる汎用性の高さを有するものであるため,今後の革新的なものずくりに寄与するものと考えられる.

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Comments on the Screening Results   Annual Research Report
  • Research Products

    (35 results)

All 2021 2020 2019

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results) Presentation (28 results) (of which Int'l Joint Research: 13 results)

  • [Journal Article] A new constraint on principal stress direction variance to improve load bearing capacity2021

    • Author(s)
      Kamada Hiroki, Kato Junji, Uozumi Hisao, Kikawa Kazuo
    • Journal Title

      STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION

      Volume: 64 Issue: 5 Pages: 3209-3225

    • DOI

      10.1007/s00158-021-03079-8

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Robust topology optimization based on finite strain considering uncertain loading conditions2020

    • Author(s)
      Takayuki Nishino,Junji Kato
    • Journal Title

      International journal for Numerical Methods in Engineering

      Volume: 122 Issue: 6 Pages: 1427-1455

    • DOI

      10.1002/nme.6584

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] トポロジー最適化による構造強度向上を目的とした主応力方向分散制約の提案2020

    • Author(s)
      鎌田浩基,加藤準治,京谷孝史
    • Journal Title

      日本計算工学会論文集

      Volume: No.20200006

    • NAID

      130007836958

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 数理的均質化法に基づく材料微視構造のトポロジー最適2020

    • Author(s)
      加藤準治
    • Journal Title

      日本セラミックス協会誌

      Volume: 55 Pages: 377-382

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Study on Optimal Design for Sandwich Beams Based on the Ground Structure Method2019

    • Author(s)
      小池 雄介、牛島 邦晴、加藤 準治
    • Journal Title

      Transactions of the Japan Society for Computational Engineering and Science

      Volume: 2019 Issue: 0 Pages: 20190006-20190006

    • DOI

      10.11421/jsces.2019.20190006

    • NAID

      130007636373

    • ISSN
      1347-8826
    • Year and Date
      2019-04-24
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Topology optimization with geometrical nonlinearity considering uncertain loading condition2019

    • Author(s)
      西野 崇行 , 加藤 準治 , 京谷 孝史
    • Journal Title

      Transactions of the Japan Society for Computational Engineering and Science

      Volume: 2019 Issue: 0 Pages: 20190004-20190004

    • DOI

      10.11421/jsces.2019.20190004

    • NAID

      130007630047

    • ISSN
      1347-8826
    • Year and Date
      2019-04-10
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] STRESS-CONSTRAINED TOPOLOGY OPTIMIZATION OF INFILL STRUCTURE2019

    • Author(s)
      鎌田浩基,干場大也,加藤準治,京谷孝史
    • Journal Title

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

      Volume: 75 Issue: 1 Pages: 68-85

    • DOI

      10.2208/jscejam.75.68

    • NAID

      130007748730

    • ISSN
      2185-4661
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Stress-Based Multi-Material Topology Optimization to Prevent Interface Fracture2021

    • Author(s)
      Daiki Watanabe, Hiroya Hoshiba, Junji Kato
    • Organizer
      16th U.S. National Congress on Computational Mechanics
    • Related Report
      2021 Annual Research Report
  • [Presentation] Multi-scale topology optimization applying FFT-based homogenization approach2021

    • Author(s)
      Matsui, M., Hoshiba, H., Nishiguchi, K., Kato, J. and Ogura, H.
    • Organizer
      14th World Congress of Structural and Multidisciplinary Optimization
    • Related Report
      2021 Annual Research Report
  • [Presentation] Additive manufacturing topology optimization for buckling with stiffness constraint2021

    • Author(s)
      Kato, J., Mizutori, T., Hoshiba, H., Uozumi, H. and Kikawa, K.
    • Organizer
      14th World Congress of Structural and Multidisciplinary Optimization
    • Related Report
      2021 Annual Research Report
  • [Presentation] 3D-printing FPRの構造および繊維配向の最適化2021

    • Author(s)
      森部天仁,干場大也,加藤準治
    • Organizer
      第26回計算工学講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Optimization and additive manufacturing technology for smart materials and structures2021

    • Author(s)
      Kuniharu Ushijima and junji Kato
    • Organizer
      ACMFMS2020+1
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Multi-material Topology Optimization Considering Static Fracture of The Interface2021

    • Author(s)
      Daiki Watanabe,Hiroya Hoshiba and Junji Kato
    • Organizer
      ACMFMS2020+1
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] CONDITIONAL EXPLICIT FORMULATION OF SENSITIVITY ANALYSIS FOR NONLINEER TOPOLOGY OPTIMIZATION2021

    • Author(s)
      Hiroya,Hoshiba,Junji Kato
    • Organizer
      WCCM2020(World Congress in Computational Mechanics and ECCOMAS Congres)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] MULTI-MATERIAL TOPOLOGY OPTIMIZATION WITH STRESS CONSTRAINTS UNDER A HIGH TEMPERETURE ENVIROMENT2021

    • Author(s)
      Daiki Watanabe,Hiroya Hoshiba and Junji Kato
    • Organizer
      WCCM2020(World Congress in Computational Mechanics and ECCOMAS Congres)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] TOPOLOGY OPTIMIZATION BASED ON A HOMOGENIZATION APPROACH FOR DISTRIBUTION OF SEAMLESS MICROSTRUCTURES2021

    • Author(s)
      Masayoshi Matsui,Hiroki Kamada,Hiroya Hoshiba and Junji Kato
    • Organizer
      WCCM2020(World Congress in Computational Mechanics and ECCOMAS Congres)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Topology optimization considering nonlinear behavior of brittle damage material model2020

    • Author(s)
      Hiroya Hoshiba,Junji Kato
    • Organizer
      COMPSAFE2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optimization of fiber orientation and location for 3D-printing FRP2020

    • Author(s)
      Takahito Moribe,Hiroya Hoshiba,Junji Kato
    • Organizer
      COMPSAFE2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Multi-material topology optimization considering strength of materials and interfaces2020

    • Author(s)
      Daiki Watanabe,Hiroya Hoshiba,Junji Kato
    • Organizer
      COMPSAFE2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Topology optimization to improve structural strength for additive manufacturing2020

    • Author(s)
      Junji Kato
    • Organizer
      ACSMO2020(Asian Congress of Structural and Multidisciplinary Optimization 2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 積層造形を念頭においたトポロジー最適設計2020

    • Author(s)
      加藤準治
    • Organizer
      2020年度 日本機械学会年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 三相材料モデルによるラティス構造のトポロジー最適化設計2020

    • Author(s)
      田邉 雄太, 牛島 邦晴, 加藤 準治
    • Organizer
      第25回計算工学講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 建設3Dプリンターを念頭においたトポロジー最適設計法の開発2020

    • Author(s)
      干場 大也, 高橋 寛成, 加藤 準治
    • Organizer
      第25回計算工学講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 3D-printing FRPの機械的性能評価および数値シミュレーション2020

    • Author(s)
      森部 天仁, 干場 大也, 加藤 準治
    • Organizer
      第25回計算工学講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] コンクリート構造の損傷解析に基づく感度解析アルゴリズムの提案2020

    • Author(s)
      水鳥智幸, 干場大也, 加藤準治
    • Organizer
      第23回応用力学シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] 3D-printing FRPの機械的性能評価および数値解析モデルの検討2020

    • Author(s)
      森部天仁, 干場大也, 加藤準治
    • Organizer
      第23回応用力学シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] コンクリート補強材を想定した周期的なCFRP構造の最適設計2020

    • Author(s)
      松井聖圭, 干場大也, 加藤準治
    • Organizer
      第23回応用力学シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] Robust topology optimization based on finite deformation to uncertain loading conditions2019

    • Author(s)
      Takayuki Nishino, Junji Kato
    • Organizer
      13th Word Congress of Structural and Multidisciplinary Optimization (WCSMO13)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 幾何学的非線形性および荷重条件の不確かさを考慮したロバスト・トポロジー最適化2019

    • Author(s)
      西野 崇行,津嶋 雄大,加藤 準治
    • Organizer
      第24回計算工学講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 構造の冗長性を考慮したトポロジー最適化に関する研究2019

    • Author(s)
      鎌田 浩基,加藤 準治,京谷 孝史,魚住 久雄,木皮 和男
    • Organizer
      第24回計算工学講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 積層造形時の形状不整を考慮したラティス構造の最適化設計2019

    • Author(s)
      小池 雄介,牛島 邦晴,加藤 準治
    • Organizer
      第24回計算工学講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 座屈荷重制御を目的としたマルチスケールトポロジー最適化手法の提案2019

    • Author(s)
      鎌田 浩基,加藤 準治,京谷 孝史
    • Organizer
      第65回理論応用力学講演会・第22回応用力学シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] Simplified Approach of Topology Optimization Considering Structural Redundancy2019

    • Author(s)
      H.Kamada,J.Kato
    • Organizer
      15th U.S. National Congress on Computational Mechanics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Simplified approach of topology optimization for improving structural strength2019

    • Author(s)
      H.Kamada,J.Kato
    • Organizer
      International Conference on Simulation for Additive Manufacturing (Sim-AM2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optimal Design of Lattice Structure Considering Constraints through Additive Manufacturing Process2019

    • Author(s)
      Y.Koike,K.Ushijima and J.Kato
    • Organizer
      International Conference on Simulation for Additive Manufacturing (Sim-AM2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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