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2018 年度 実施状況報告書

The role of cracks on the out-of-plane rotations, plasticity and fracture in kirigami structures

研究課題

研究課題/領域番号 18K18065
研究機関国立研究開発法人海洋研究開発機構

研究代表者

Barbieri Ettore  国立研究開発法人海洋研究開発機構, 数理科学・先端技術研究分野, 研究員 (10816284)

研究期間 (年度) 2018-04-01 – 2020-03-31
キーワードkirigami / meshless / modelling / buckling
研究実績の概要

Concerning the first two (out of three) research questions posed in the proposal, we clarified that the out-of-plane deformation in a kirigami structure is the result of a buckling phenomenon, known as bulging cracks. Through our simulations, we realised that, without incorporating buckling, the transition between first (in-plane deformation) and second (out-of-plane) regime could not be captured. The next year of the project will be devoted to answering the third research question: the role of the kirigami cuts in the yielding stage that leads to the final fracture.

現在までの達成度 (区分)
現在までの達成度 (区分)

2: おおむね順調に進展している

理由

The work allowed to answer two of the three research questions and led to the publications of six papers, all in peer-reviewed very reputable international journals.
The project is progressing rather smoothly, that we are moving to validate our modelling on real structures.
With my collaborators (from the UK, Italy and the US), we are simulating the mechanical behaviour of kirigami in two applications: the first one is a kirigami made with silk-based polymers; the second is a kirigami on cylindrical inflatable tubes for soft robotics.

今後の研究の推進方策

Next and final year of the project will focus on the post-yield mechanics and the propagation of the kirigami cracks. We will also concentrate on a full validation (comparison with experimental data) of the software.

次年度使用額が生じた理由

I will use the next year's budget to go to conferences and to pay for open-access publication fees.

  • 研究成果

    (9件)

すべて 2019 2018

すべて 雑誌論文 (6件) (うち国際共著 6件、 オープンアクセス 5件) 学会発表 (3件) (うち招待講演 2件)

  • [雑誌論文] A meshless method for the nonlinear von K?rm?n plate with multiple folds of complex shape2019

    • 著者名/発表者名
      Barbieri Ettore、Ventura Leonardo、Grignoli Davide、Bilotti Emiliano
    • 雑誌名

      Computational Mechanics

      巻: 1 ページ: 1~19

    • DOI

      10.1007/s00466-019-01671-w

    • オープンアクセス / 国際共著
  • [雑誌論文] Curvature Tuning in Folded Strips Through Hyperstatic Applied Rotations2019

    • 著者名/発表者名
      Ettore Barbieri
    • 雑誌名

      Frontiers in Materials

      巻: 6 ページ: 1~12

    • DOI

      10.3389/fmats.2019.00041

    • オープンアクセス / 国際共著
  • [雑誌論文] Bone matrix development in steroid-induced osteoporosis is associated with a consistently reduced fibrillar stiffness linked to altered bone mineral quality2018

    • 著者名/発表者名
      Xi L.、De Falco P.、Barbieri E.、Karunaratne A.、Bentley L.、Esapa C.T.、Terrill N.J.、Brown S.D.M.、Cox R.D.、Davis G.R.、Pugno N.M.、Thakker R.V.、Gupta H.S.
    • 雑誌名

      Acta Biomaterialia

      巻: 76 ページ: 295~307

    • DOI

      10.1016/j.actbio.2018.05.053

    • オープンアクセス / 国際共著
  • [雑誌論文] Mechanics of mutable hierarchical composite cellular materials2018

    • 著者名/発表者名
      Ongaro F.、Barbieri E.、Pugno N.M.
    • 雑誌名

      Mechanics of Materials

      巻: 124 ページ: 80~99

    • DOI

      10.1016/j.mechmat.2018.05.006

    • 国際共著
  • [雑誌論文] Limitations of Viscoelastic Constitutive Models for Carbon-Black Reinforced Rubber in Medium Dynamic Strains and Medium Strain Rates2018

    • 著者名/発表者名
      Carleo Francesca、Barbieri Ettore、Whear Roly、Busfield James
    • 雑誌名

      Polymers

      巻: 10 ページ: 988~988

    • DOI

      10.3390/polym10090988

    • オープンアクセス / 国際共著
  • [雑誌論文] Breaking the Nanoparticle Loading Dispersion Dichotomy in Polymer Nanocomposites with the Art of Croissant-Making2018

    • 著者名/発表者名
      Santagiuliana Giovanni、Picot Olivier T.、Crespo Maria、Porwal Harshit、Zhang Han、Li Yan、Rubini Luca、Colonna Samuele、Fina Alberto、Barbieri Ettore、Spoelstra Anne B.、Mirabello Giulia、Patterson Joseph P.、Botto Lorenzo、Pugno Nicola M.、Peijs Ton、Bilotti Emiliano
    • 雑誌名

      ACS Nano

      巻: 12 ページ: 9040~9050

    • DOI

      10.1021/acsnano.8b02877

    • オープンアクセス / 国際共著
  • [学会発表] Cracking me softly - the mechanics of hyperelastic kirigami structures2018

    • 著者名/発表者名
      Ettore Barbieri
    • 学会等名
      Invited Seminar at IMT Lucca, Italy
    • 招待講演
  • [学会発表] Eigencurvatures in hyperstatic folded sheet2018

    • 著者名/発表者名
      Ettore Barbieri, Leonardo Ventura
    • 学会等名
      International Workshop on Computational Mechanics of Materials IWCMM28
  • [学会発表] Curvature tuning in folded sheets through hyperstatic confinement2018

    • 著者名/発表者名
      Ettore Barbieri
    • 学会等名
      Second European-Latin-American Conference of Theoretical and Applied Mechanics
    • 招待講演

URL: 

公開日: 2019-12-27  

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