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Development of multi-scale shape optimization method for creating ultra-lightweight meta-porous structures

Research Project

Project/Area Number 21K03757
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) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2021: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywordsマルチスケール / 形状最適化 / 軽量化 / ポーラス構造 / 最適設計 / シェル構造 / 形状最適化手法 / マイクロラチス構造 / 積層シェル / 均質化法 / H1勾配法 / メタマテリアル
Outline of Research at the Start

近年、3Dプリンティング技術の発展に伴い、軽量化への寄与の大きいポーラス材料が注目されている。マクロ構造の形状とマクロ構造内に分布するミクロ構造の空孔形状を自由に変動させることができれば、力学的に無駄のない革新的、極限的な軽量構造、メタミクロ構造が実現される。本研究では、このマクロ構造とミクロ構造を同時に最適化するパラメータ化フリーマルチスケール形状最適化のための理論と最適化システムの開発を行う。構造設計問題として、剛性、振動、及び強度問題を扱い、更に輸送機器に多用されるシェル構造への適用も進める。

Outline of Final Research Achievements

With the development of 3D printing technology, innovative weight reduction can be expected by distributing porous materials (microstructures) with voids in appropriate locations in the main body of a structure (macrostructure). In this study, we developed a novel multi-scale shape optimization method that optimizes the shape, material, and cross-sectional dimensions of the microstructures distributed in the macrostructure while optimizing the shape of the macrostructure. We dealt with design problems of rigidity, vibration, and strength, and proposed solutions to them. We freely varied the design variables of the shapes, materials and dimensions of elastic bodies, plate and shell macrostructures, and microstructures consisting of porous and lattice structures without shape design parameterization, and succeeded in obtaining maximum mechanical properties and ultra-lightweight structures.

Academic Significance and Societal Importance of the Research Achievements

これまでのマルチスケール問題の最適設計に関する研究はトポロジー最適化に関するものであり、形状最適化を対象にした本研究は新たな研究である。トポロジー最適化に比べて設計自由度は少ないが、形状と材料と寸法を設計変数とすることで、同等もしくはそれ以上のミクロ構造の創成が可能となる。更に、トポロジー最適化では得られない明瞭で滑らか、且つ具体的な境界設計やより微細構造が直接求められることを可能にし、3Dプリンティングへのダイレクトな適用も可能とした。
提案手法を設計に利用することにより、設計者にマルチスケールの最適設計の知見を与えると共に、経験の浅い設計者への設計支援システムにもなる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (47 results)

All 2024 2023 2022 2021 Other

All Journal Article (18 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 17 results,  Open Access: 5 results) Presentation (27 results) (of which Int'l Joint Research: 12 results) Remarks (2 results)

  • [Journal Article] Concurrent multiscale and multi-material optimization method for natural vibration design of porous structures2024

    • Author(s)
      Masatoshi Shimoda, Junpei Fujita, Musaddiq Al Ali, Ayu Kamiya
    • Journal Title

      International journal of numerical methods in engineering

      Volume: 125 Issue: 7

    • DOI

      10.1002/nme.7424

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Metaheuristic aided structural topology optimization method for heat sink design with low electromagnetic interference2024

    • Author(s)
      Musaddiq Al Ali, Masatoshi Shimoda, Brahim Benaissa, Masakazu Kobayashi, Tsunehiro Takeuchi, Ameer Al-Shawk, Sina Ranjbar
    • Journal Title

      Scientific reports

      Volume: 14 Issue: 1 Pages: 3431-3431

    • DOI

      10.1038/s41598-024-54083-z

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Shape optimum design of porous structure for minimizing maximum thermal stress2023

    • Author(s)
      鳥崎海広,下田昌利
    • Journal Title

      Transactions of the JSME (in Japanese)

      Volume: 89 Issue: 925 Pages: 23-00145-23-00145

    • DOI

      10.1299/transjsme.23-00145

    • ISSN
      2187-9761
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Micropore shape optimization of porous laminated shell structures2023

    • Author(s)
      Masatoshi Shimoda, Motomu Hikasa, Musaddiq Al Ali
    • Journal Title

      Additive manufacturing

      Volume: 69 Pages: 103530-103530

    • DOI

      10.1016/j.addma.2023.103530

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Exploring the influence of initial design domain dependencies in concurrent multiscale topology optimization for heat conductivity maximization2023

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

      Computer Physics Communications

      Volume: 1-295 Pages: 108988-108988

    • DOI

      10.1016/j.cpc.2023.108968

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Hygrally activated displacement inverter using a multiphysics multiscale topology optimization with considering evaporation2023

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

      Structural and Multidisciplinary Optimization Journal

      Volume: 66-224 Issue: 10 Pages: 1-16

    • DOI

      10.1007/s00158-023-03679-6

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On concurrent multiscale topology optimization for porous structures under hygro-thermo-elastic multiphysics with considering evaporation2023

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

      International journal of numerical methods in engineering

      Volume: 124 Issue: 14 Pages: 3219-3249

    • DOI

      10.1002/nme.7245

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Non-parametric optimization for lightweight and high heat conductive structures under convection using metaheuristic structure binary-distribution method2023

    • Author(s)
      Musaddiq Al Ali, Masatoshi Shimoda, Brahim Benaissa, Masakazu Kobayashi
    • Journal Title

      Applied Thermal Engineering

      Volume: 233 Pages: 121124-121124

    • DOI

      10.1016/j.applthermaleng.2023.121124

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On multiphysics concurrent multiscale topology optimization for designing porous heat-activated compliant mechanism under convection for additive manufacture2023

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

      Engineering Structures

      Volume: 294 Pages: 116756-116756

    • DOI

      10.1016/j.engstruct.2023.116756

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Concurrent multiscale hybrid topology optimization for light weight porous soft robotic hand with high cellular stiffness2023

    • Author(s)
      Musaddiq Al Ali, Masatoshi Shimoda, Brahim Benaissa, Masakazu Kobayashi
    • Journal Title

      Proceedings of the International Conference of Steel and Composite for Engineering Structures. ICSCES 2022. Lecture Notes in Civil Engineering

      Volume: 317 Pages: 265-278

    • DOI

      10.1007/978-3-031-24041-6_22

    • ISBN
      9783031240409, 9783031240416
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Concurrent shape optimization of a multiscale structure for controlling macrostructural stiffness2022

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

      Structural and Multidisciplinary Optimization

      Volume: 65-211 Issue: 7

    • DOI

      10.1007/s00158-022-03304-y

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Investigation of concurrent multiscale topology optimization for designing lightweight macrostructure with high thermal conductivity2022

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

      International Journal of Thermal Sciences

      Volume: 179 Pages: 107653-107653

    • DOI

      10.1016/j.ijthermalsci.2022.107653

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Toward multiphysics multiscale concurrent topology optimization for lightweight structures with high heat conductivity and high stiffness using MATLAB2022

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

      Structural and Multidisciplinary Optimization

      Volume: 65-7 Issue: 7 Pages: 26-26

    • DOI

      10.1007/s00158-022-03291-0

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Shape optimization method for strength design problem of microstructures in a multiscale structure2022

    • Author(s)
      Mihiro Torisaki, Masatoshi Shimoda, Musaddiq Al Ali
    • Journal Title

      International Journal for Numerical Methods in Engineering

      Volume: - Issue: 8 Pages: 7186-7186

    • DOI

      10.1002/nme.7186

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Size optimization of micro-frame structures for designing multiscale structures2022

    • Author(s)
      内匠祐太朗,下田昌利
    • Journal Title

      Transactions of the JSME (in Japanese)

      Volume: 88 Issue: 915 Pages: 22-00240-22-00240

    • DOI

      10.1299/transjsme.22-00240

    • ISSN
      2187-9761
    • Related Report
      2022 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
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Concurrent multi-scale shape optimization for micro and macro shape design of structures2021

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

      Transactions of the JSME (in Japanese)

      Volume: 87 Issue: 902 Pages: 21-00194-21-00194

    • DOI

      10.1299/transjsme.21-00194

    • NAID

      130008108013

    • ISSN
      2187-9761
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Micropore shape optimization for natural vibration design of porous structures2021

    • Author(s)
      藤田隼平,下田昌利
    • Journal Title

      Transactions of the JSME (in Japanese)

      Volume: 87 Issue: 902 Pages: 21-00200-21-00200

    • DOI

      10.1299/transjsme.21-00200

    • NAID

      130008107942

    • ISSN
      2187-9761
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Exploring Concurrent Multi-materials and Multiscale Hybrid Topology Optimization for Lightweight Porous Gripping Mechanism2023

    • Author(s)
      Musaddiq Al Ali, Brahim Benaissa, Samir Khatir, Masatoshi Shimoda, Masakazu Kobayashi, Paul Vignon, Ameer Al-Shawk, Beatrice Lay
    • Organizer
      International Conference of Steel and Composite for Engineering Structures 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Metamaterials Design with Non-parametric Optimization2023

    • Author(s)
      Musaddiq Al Ali, Masatoshi Shimoda
    • Organizer
      World congress of advanced materials 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Metamaterials Design with Non-parametric Optimization2023

    • Author(s)
      Musaddiq Al Ali, Masatoshi Shimoda
    • Organizer
      The World Congress of Structural and Multidisciplinary Optimization 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Shape optimization method for strength problems considering thermal expansion in a multiscale structure2023

    • Author(s)
      Mihiro Torisaki、Masatoshi, Shimoda
    • Organizer
      Math 2 Product 2023:Emerging Technologies in Computational Science for Industry, Sustainability and Innovation
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Concurrent multiscale optimization of macro and micro shapes of laminated shell structure2023

    • Author(s)
      Motomu Hikasa, Masatoshi Shimoda
    • Organizer
      Math 2 Product 2023:Emerging Technologies in Computational Science for Industry, Sustainability and Innovation
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 熱伝導を考慮したポーラス構造体の熱応力問題に対するマルチスケール形状最適設計2023

    • Author(s)
      鳥崎海広,下田昌利
    • Organizer
      日本機械学会 第36回計算力学講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ミクロ形状が最適化された多孔質積層シェル構造の試作と剛性評価2023

    • Author(s)
      日笠求,下田昌利
    • Organizer
      日本機械学会 第36回計算力学講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ミクロシェル構造の板厚設計を目的とするマルチスケール最適化2023

    • Author(s)
      永井里奈,下田昌利
    • Organizer
      日本機械学会 第33回設計工学・システム部門講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 振動固有値最大化を目的とする積層ポーラスシェル構造体のミクロ構造の形状最適化2023

    • Author(s)
      神谷亜優,下田昌利
    • Organizer
      日本機械学会2023年度年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Toward concurrent multiscale topology optimization for high heat conductive and light structure2022

    • Author(s)
      Musaddiq Al Ali, Masatoshi Shimoda
    • Organizer
      the 15th World Congress on Computational Mechanics (WCCM-XV), 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Concurrent multiscale topology optimization for designing displacement inverter2022

    • Author(s)
      Musaddiq Al Ali, Masatoshi Shimoda
    • Organizer
      the 15th World Congress on Computational Mechanics (WCCM-XV), 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Concurrent multiscale optimization method for natural vibration design of porous structures2022

    • Author(s)
      Junpei Fujita, Masatoshi Shimoda
    • Organizer
      Asian Congress of Structural and Multidisciplinary Optimization 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Size optimization of micro-frame structure for designing multiscale structure2022

    • Author(s)
      Yutaro Takumi, Masatoshi Shimoda
    • Organizer
      Asian Congress of Structural and Multidisciplinary Optimization 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Concurrent multiscale topology optimization for designing light weight heat activated compliant mechanism2022

    • Author(s)
      Musaddiq Al Ali, Masatoshi Shimoda
    • Organizer
      Asian Congress of Structural and Multidisciplinary Optimization 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] マルチスケール構造体の強度設計問題に対するミクロ構造の形状最適設計手法2022

    • Author(s)
      鳥崎海広,下田昌利
    • Organizer
      日本機械学会2022年度年次大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 多孔質積層シェル構造体のミクロ孔構造の形状最適化法2022

    • Author(s)
      日笠求,下田昌利
    • Organizer
      日本機械学会2022年度年次大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 3次元マルチスケール多孔質構造体のマクロ・ミクロ構造の同時形状最適化2022

    • Author(s)
      下田昌利,藤岡みなみ
    • Organizer
      日本機械学会2022年度年次大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 多孔質構造体の固有振動設計を目的とする形状およびトポロジーのマルチスケール同時最適化2022

    • Author(s)
      藤田隼平,下田昌利
    • Organizer
      第32回設計工学・システム部門講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] マルチスケール構造体におけるマイクロラチス構造の形状最適化手法2022

    • Author(s)
      内匠祐太朗,下田昌利
    • Organizer
      第32回設計工学・システム部門講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] マルチスケール構造体の熱応力問題に対する形状最適設計2022

    • Author(s)
      鳥崎海広,下田昌利
    • Organizer
      日本機械学会 第14回最適化シンポジューム(OPTIS2022)
    • Related Report
      2022 Research-status Report
  • [Presentation] 多孔質積層シェル構造体におけるマクロ・ミクロ同時形状最適化法2022

    • Author(s)
      日笠求,下田昌利
    • Organizer
      日本機械学会 第14回最適化シンポジューム(OPTIS2022)
    • Related Report
      2022 Research-status Report
  • [Presentation] Concurrent topology optimization for cellular high conductive heat sink with high stiffness2021

    • Author(s)
      Musaddiq Al Ali, Masatoshi Shimoda
    • Organizer
      14th World Congress of Structural and Multidisciplinary Optimization
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Concurrent shape optimization for multiscale structure using H1 gradient method2021

    • Author(s)
      Minami Fujioka, Masatoshi Shimoda
    • Organizer
      14th World Congress of Structural and Multidisciplinary Optimization
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] マクロ構造の剛性最大化を目的とするマクロ構造とミクロ構造の同時形状最適化2021

    • Author(s)
      藤岡みなみ,下田昌利
    • Organizer
      日本機械学会 第31回設計工学・システム部門講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 多孔質構造体の固有振動問題に対するミクロ構造の形状最適化2021

    • Author(s)
      藤田隼平,下田昌利
    • Organizer
      日本機械学会 第31回設計工学・システム部門講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 所望変形を実現するマルチスケール構造の同時形状最適化2021

    • Author(s)
      藤岡みなみ,下田昌利,Musaddiq Al ALI
    • Organizer
      日本機械学会第34回計算力学講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] マルチスケール最適化のための均質化法の骨組ミクロ構造への応用2021

    • Author(s)
      内匠祐太朗,下田昌利,Musaddiq Al ALI
    • Organizer
      日本機械学会第34回計算力学講演会
    • Related Report
      2021 Research-status Report
  • [Remarks] 豊田工業大学HOME > 研究・産学連携 > 研究室紹介 > 固体力学

    • URL

      https://www.toyota-ti.ac.jp/research/laboratory/post-3.html

    • Related Report
      2022 Research-status Report
  • [Remarks] TOP > 研究室情報>固体力学研究室

    • URL

      https://ttiweb.toyota-ti.ac.jp/public/labo.php?s=1&id=2644

    • Related Report
      2022 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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