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Experimental and simulational demonstration of the optimal print path for 3D printed CFRP based on the microstructure

Research Project

Project/Area Number 22K20415
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0301:Mechanics of materials, production engineering, design engineering, fluid engineering, thermal engineering, mechanical dynamics, robotics, aerospace engineering, marine and maritime engineering, and related fields
Research InstitutionNihon University

Principal Investigator

ICHIHARA Naruki  日本大学, 理工学部, 助手 (30961552)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2023: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords3Dプリント / 構造最適化 / CFRP / トポロジー最適化 / 異方性 / 最適化 / 異方性トポロジー最適化 / 数値最適化 / 逆均質化 / ツールパス / 3DプリントCFRP / 最適化設計 / プリントパス
Outline of Research at the Start

炭素繊維強化プラスチック(CFRP)を造形できる3Dプリンタを活用して,外形形状のみならず,繊維配向やハッチ間隔などのプリントパスまで最適化されたCFRP構造の有効性を解析的,実験的双方から実証することを目的とする.具体的には,異方性マルチスケールトポロジー最適化を3DプリントCFRPへ適用する.最適化結果から3DプリントCFRPを造形し,材料試験によって剛性の向上を実験的に検証する.更に有限要素モデルを作成し,性能向上を解析的に検証する.このようにして,従来の3DプリントCFRPに比べて高い比剛性を達成し,構造のさらなる軽量化に貢献する.

Outline of Final Research Achievements

Utilizing a 3D printer that can build carbon fiber reinforced plastic (CFRP), which is used in aerospace applications, we have optimized the 3D printing path for the external shape and the interior of the structure. This process enables optimal design that takes full advantage of CFRP's characteristics, making it possible to create a lighter and more efficient CFRP structure.

Academic Significance and Societal Importance of the Research Achievements

学術的意義:本研究は,熱や電気をはじめとする様々な物理現象を数値的に予測することができる有限要素法によるトポロジー最適化に基づいている.従ってトポロジー最適化によって得られた様々な物理現象における最適構造をCFRP等の複合材料で3Dプリント可能にする点で汎用性が高く,今後の最適設計の研究を発展させる可能性がある.
社会的意義:本研究で設計可能なCFRP構造は,従来CFRP構造よりも軽量かつ高性能であり,輸送機等の軽量化に直接貢献ができる.

Report

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

    (9 results)

All 2024 2023 2022

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Penalized anisotropy: Controlling anisotropy growth in concurrent optimization of topology and fiber orientation for orthotropic composite materials2024

    • Author(s)
      Ichihara Naruki、Ueda Masahito、Yokozeki Tomohiro
    • Journal Title

      Journal of Composite Materials

      Volume: 58 Issue: 5 Pages: 677-688

    • DOI

      10.1177/00219983241230379

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of a Perimeter on the Post-failure Behavior of Fiber-reinforced Polymer Composite Lattices2023

    • Author(s)
      Ichihara Naruki、Ueda Masahito、Todoroki Akira
    • Journal Title

      Chinese Journal of Mechanical Engineering: Additive Manufacturing Frontiers

      Volume: 2 Issue: 2 Pages: 100074-100074

    • DOI

      10.1016/j.cjmeam.2023.100074

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 3D-printed high-toughness composite structures by anisotropic topology optimization2023

    • Author(s)
      Naruki Ichihara, Masahito Ueda
    • Journal Title

      Composites Part B: Engineering

      Volume: 253 Pages: 110572-110572

    • DOI

      10.1016/j.compositesb.2023.110572

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] 材料配向とトポロジーの同時最適化における異方性発達の制御2023

    • Author(s)
      市原稔紀, 上田政人
    • Organizer
      M&M2023 材料力学カンファレンス/M&P2023 機械材料・材料加工技術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] TAILORING OF CONTINUOUS CARBON FIBER REINFORCED POLYMER LATTICE STRUCTURES2023

    • Author(s)
      Naruki Ichihara, Masahito Ueda
    • Organizer
      23rd International Conference on Composite Materials
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 異方性トポロジー最適化に基づく3Dプリント複合材料の高靭性ラティス構造2023

    • Author(s)
      市原稔紀,上田政人
    • Organizer
      日本複合材料学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 3D print path generation based on the optimized material orientation2022

    • Author(s)
      Naruki Ichihara, Masahito Ueda
    • Organizer
      3rd International Conference on Additive Fabrication of Composites
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Topology and material orientation optimization for 3D printed fiber-reinforced polymers2022

    • Author(s)
      Naruki Ichihara, Masahito Ueda
    • Organizer
      International Conference on Materials and Processing 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Conformed print path generation with optimized material orientation for 3D printed fiber reinforced polymers2022

    • Author(s)
      Naruki Ichihara
    • Organizer
      CAMX2022 SAMPE University Research Symposium
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2022-09-01   Modified: 2025-01-30  

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