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Impact mitigation via nonlinear wave propagation based on energy trapping and releasing behaviors

Research Project

Project/Area Number 22K14154
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 18010:Mechanics of materials and materials-related
Research InstitutionJapan Aerospace EXploration Agency

Principal Investigator

Yasuda Hiromi  国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 助教 (10910903)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords衝撃吸収構造 / 非線形波動 / 機械的メタマテリアル / マルチステイブル構造 / マルチステイブル
Outline of Research at the Start

本研究では、bistableな折り紙構造が持つエネルギートラッピングの性質に注目し、折り紙構造中における非線形波動に基づく新しい衝撃吸収構造の開拓を目指す。従来の衝撃吸収材はそれ自体を破壊してしまうのに対し、本研究では複数の折り紙ユニットセルを連結させたネットワークを形成し、弾性変形のみによる逐次的なエネルギー遷移を誘発する非線形波動を作り出すことで、塑性変形が伴わないエネルギー吸収・散逸を行う。また、本研究は構造中を伝搬する非線形波動の物理現象としての理解とその工学応用をつなぐ役割を果たす。

Outline of Final Research Achievements

We designed and analyzed multistable architected structures for developing a reusable energy-absorbing device. We started by introducing a numerical model to examine the multistability of unit cell structures, and we then constructed a chain of such multistable components to explore wave dynamics. In particular, we studied nonlinear wave propagation in our multistable system by applying impact to the system. Our analysis shows that our structure can exhibit impact mitigation behavior arising from the energy-trapping behavior. In addition, due to the stored elastic energy, we observed the formation of transition waves to change the configuration of the structure to its initial state. Also, we fabricated a prototype and demonstrated such energy-trapping/-releasing behaviors in a repeatable manner.

Academic Significance and Societal Importance of the Research Achievements

これまでの塑性変形に基づく衝撃吸収材では、一度使用すると元の形状に戻すことはできないため繰り返しの利用は困難であるが、弾性変形のみによるエネルギーの吸収・散逸により、再使用可能な衝撃吸収構造が期待できる。また、本研究で対象とした構造を線形・非線形波動の研究におけるプラットフォームとして用いることで、異なる非線形波動同士の衝突といった様々な波動現象の探求につながると考える。

Report

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

    (10 results)

All 2024 2023 2022 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Int'l Joint Research] University of Pennsylvania(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Pennsylvania(米国)

    • Related Report
      2022 Research-status Report
  • [Journal Article] Phase transitions in 2D multistable mechanical metamaterials via collisions of soliton-like pulses2024

    • Author(s)
      Jiao Weijian、Shu Hang、Tournat Vincent、Yasuda Hiromi、Raney Jordan R.
    • Journal Title

      Nature Communications

      Volume: 15 Issue: 1 Pages: 333-333

    • DOI

      10.1038/s41467-023-44293-w

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Nucleation of transition waves via collisions of elastic vector solitons2023

    • Author(s)
      Yasuda H.、Shu H.、Jiao W.、Tournat V.、Raney J. R.
    • Journal Title

      Applied Physics Letters

      Volume: 123 Issue: 5 Pages: 051701-051701

    • DOI

      10.1063/5.0156023

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] マルチステイブルな機械的メタマテリアルの振動特性解析2023

    • Author(s)
      安田博実
    • Organizer
      第65回構造強度に関する講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Nonlinear waves in multistable mechanical metamaterials2023

    • Author(s)
      Hiromi Yasuda, Hang Shu, Weijian Jiao, Tournat Vincent, and Jordan Raney
    • Organizer
      The 10th International Congress on Industrial and Applied Mathematics (ICIAM 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] マルチステイブルな特性を持つメカニカルメタマテリアルの非線形波動2023

    • Author(s)
      安田博実
    • Organizer
      日本機械学会 M&M2023 材料力学カンファレンス
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Triggering of transition waves by the collision of solitons or breathers in bistable mechanical metamaterials2023

    • Author(s)
      Vincent Tournat, Apostolos Paliovaios, Vassos Achilleos, Georgios Theocharis, Hiromi Yasuda, Hang Shu, Weijian Jiao, Jordan Raney, Katia Bertoldi
    • Organizer
      APS March Meeting 2023
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Collisions of nonlinear waves in flexible mechanical metamaterials2022

    • Author(s)
      Hiromi Yasuda, Hang Shu, Weijian Jiao, Vincent Tournat, Jordan Raney
    • Organizer
      The 182nd Meeting of the Acoustical Society of America
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] マルチステイブル構造中を伝搬する非線形波動解析2022

    • Author(s)
      安田博実
    • Organizer
      第64回構造強度に関する講演会
    • Related Report
      2022 Research-status Report

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Published: 2022-04-19   Modified: 2025-01-30  

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