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Physics of flowing solids

Research Project

Project/Area Number 19K03670
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 13010:Mathematical physics and fundamental theory of condensed matter physics-related
Research InstitutionOsaka University

Principal Investigator

Michio Otsuki  大阪大学, 大学院基礎工学研究科, 准教授 (30456751)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords粉体 / ジャミング転移 / レオロジー / 摩擦 / 塑性 / ジャミング
Outline of Research at the Start

砂や粉などのマクロな固体粒子の集合体である粉体は、状況に応じて流体的な振る舞いも 固体的な振る舞いも示す、ある種の「流れる固体」として考えられる。粉体はこれまでも物 性物理の対象として度々注目を集めてきたが、それらは個別の現象に特化しており、粉体全 体を統一的に記述するような枠組みはこれまで得られていない。こうした包括的な「粉体力学」の確立を目指し、粒子の特性から粉体の力学的特性を決める微視的視点に基づいた研究 と、粉体の変形や流動をマクロな連続体的視点から解析する研究を相補的な発展を試みる。

Outline of Final Research Achievements

Granular materials consisting of macroscopic solid particles can be considered as "flowing solids" that exhibit both fluid-like and solid-like behavior depending on the situation. Based on numerical simulations and theoretical analysis, we have revealed scaling laws for the nonlinear response of granular materials under uniform shear. Using a continuum model based on the constitutive equations obtained from the above analysis, we have analyzed various flows. The analytical results are compared with those of numerical simulations and experiments.

Academic Significance and Societal Importance of the Research Achievements

類似の連続体モデルに基づいた粉体のマクロな流動・変形の解析に関しては、これまで主に土木工学的な視点から研究が進められてきた。しかし、既存の枠組みでは、粉体の力学的特性として多数のパラメータを含む経験則を仮定した上で複雑なシミュレーションを実施するしかなく、実際の現象の理解には不十分な面がある。本研究の遂行により、連続体モデルに、微視的観点から得られる力学的特性の知見を組み合わせることで、ある種のミクロな土台に基づいた粉体ダイナミクスの理解が進んだと考えられる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (33 results)

All 2023 2022 2021 2020 2019

All Journal Article (9 results) (of which Peer Reviewed: 9 results,  Open Access: 7 results) Presentation (24 results) (of which Int'l Joint Research: 5 results,  Invited: 4 results)

  • [Journal Article] Static friction coefficient depends on the external pressure and block shape due to precursor slip2023

    • Author(s)
      Iwashita Wataru、Matsukawa Hiroshi、Otsuki Michio
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 2511-2511

    • DOI

      10.1038/s41598-023-29764-w

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] An exact expression of three-body system for the complex shear modulus of frictional granular materials2023

    • Author(s)
      Otsuki Michio、Hayakawa Hisao
    • Journal Title

      Soft Matter

      Volume: 19 Issue: 11 Pages: 2127-2137

    • DOI

      10.1039/d2sm01565j

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Eigenvalue analysis of stress-strain curve of two-dimensional amorphous solids of dispersed frictional grains with finite shear strain2023

    • Author(s)
      Ishima Daisuke、Saitoh Kuniyasu、Otsuki Michio、Hayakawa Hisao
    • Journal Title

      Physical Review E

      Volume: 107 Issue: 3 Pages: 034904-034904

    • DOI

      10.1103/physreve.107.034904

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Softening and Residual Loss Modulus of Jammed Grains under Oscillatory Shear in an Absorbing State2022

    • Author(s)
      Otsuki Michio、Hayakawa Hisao
    • Journal Title

      Physical Review Letters

      Volume: 128 Issue: 20 Pages: 208002-208002

    • DOI

      10.1103/physrevlett.128.208002

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Shear modulus and reversible particle trajectories of frictional granular materials under oscillatory shear2021

    • Author(s)
      Michio Otsuki and Hisao Hayakawa
    • Journal Title

      THE EUROPEAN PHYSICAL JOURNAL E

      Volume: 44 Issue: 5

    • DOI

      10.1140/epje/s10189-021-00075-0

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Memory effect of external oscillation on residual stress in a paste2021

    • Author(s)
      Jumpei Morita and Michio Otsuki
    • Journal Title

      The European Physical Journal E

      Volume: 44 Issue: 8

    • DOI

      10.1140/epje/s10189-021-00111-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] hear modulus and reversible particle trajectories of frictional granular materials under oscillatory shear2021

    • Author(s)
      Michio Otsuki, Hisao Hayakawa
    • Journal Title

      European Physical Journal E

      Volume: -

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Shear jamming, discontinuous shear thickening, and fragile states in dry granular materials under oscillatory shear2020

    • Author(s)
      Otsuki Michio、Hayakawa Hisao
    • Journal Title

      Physical Review E

      Volume: 101 Issue: 3 Pages: 032905-032905

    • DOI

      10.1103/physreve.101.032905

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Laboratory experiment and discrete-element-method simulation of granular-heap flows under vertical vibration2019

    • Author(s)
      Tsuji Daisuke、Otsuki Michio、Katsuragi Hiroaki
    • Journal Title

      Physical Review E

      Volume: 99 Issue: 6 Pages: 062902-062902

    • DOI

      10.1103/physreve.99.062902

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] An exact expression of three-body system for the nonlinear response of frictional granular materials2023

    • Author(s)
      Michio Otsuki
    • Organizer
      Japan-France joint seminar "Physics of dense and active disordered materials"
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 粉体の平面ポアズイユ流れにおけるジャミングと臨界スケーリング2022

    • Author(s)
      林健太, 吉井究, 大槻道夫
    • Organizer
      日本物理学会 2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 粉体の平面ポアズイユ流れにおけるジャミングの連続体解析2022

    • Author(s)
      林健太, 吉井究, 大槻道夫
    • Organizer
      日本流体力学会 年会2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 摩擦を持つ粉体における複素弾性率のスケーリング2022

    • Author(s)
      大槻道夫、早川尚男
    • Organizer
      日本物理学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Softening and loop trajectories of granular materials under oscillatory shear2021

    • Author(s)
      Michio Otsuki
    • Organizer
      Fluid Fracture Workshop
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Softening and loop trajectories of jammed grains under oscillatory shear2021

    • Author(s)
      大槻道夫
    • Organizer
      ガラス転移と関連分野の最先端研究
    • Related Report
      2021 Research-status Report
  • [Presentation] 周期的剪断を受けた高密度粉体における弾性応答とループ軌道2021

    • Author(s)
      大槻道夫、早川尚男
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Softening and residual loss modulus of jammed grains under oscillatory shear2021

    • Author(s)
      Michio Otsuki
    • Organizer
      駆動散逸系の非平衡現象に関する理論的研究
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 周期的剪断を受けた高密度粒子系におけるループ軌道と異常弾性応答2021

    • Author(s)
      大槻道夫、早川尚男
    • Organizer
      日本物理学会第76回年次大会(2021年)
    • Related Report
      2020 Research-status Report
  • [Presentation] 濡れた粉体系の弾性応答2021

    • Author(s)
      吉井究、大槻道夫
    • Organizer
      日本物理学会第76回年次大会(2021年)
    • Related Report
      2020 Research-status Report
  • [Presentation] 付着力を持った粉粒体のふるいによる分離現象2021

    • Author(s)
      鯨崎佑介, 大槻道夫
    • Organizer
      日本物理学会第76回年次大会(2021年)
    • Related Report
      2020 Research-status Report
  • [Presentation] 平板間の粉体流の連続体解析2021

    • Author(s)
      黒田遼, 大槻道夫
    • Organizer
      日本物理学会第76回年次大会(2021年)
    • Related Report
      2020 Research-status Report
  • [Presentation] コロイド液体の変位相関のモデルに現れる係数の濃度依存性2021

    • Author(s)
      大信田丈志, 大槻道夫, 後藤晋, 松本剛
    • Organizer
      日本物理学会第76回年次大会(2021年)
    • Related Report
      2020 Research-status Report
  • [Presentation] 周期的剪断を受けた粉体のSofteningとループ軌道2020

    • Author(s)
      大槻道夫、早川尚男
    • Organizer
      日本物理学会2020年秋季大会(オンライン)
    • Related Report
      2020 Research-status Report
  • [Presentation] 濡れた高密度粉体系のレオロジー2020

    • Author(s)
      吉井究、大槻道夫
    • Organizer
      日本物理学会2020年秋季大会(オンライン)
    • Related Report
      2020 Research-status Report
  • [Presentation] 平板間における粉体流動の充填率依存性2020

    • Author(s)
      黒田遼, 大槻道夫
    • Organizer
      日本物理学会2020年秋季大会(オンライン)
    • Related Report
      2020 Research-status Report
  • [Presentation] ふるいによる粉体分離の最適化2020

    • Author(s)
      鯨崎佑介, 大槻道夫
    • Organizer
      日本物理学会2020年秋季大会(オンライン)
    • Related Report
      2020 Research-status Report
  • [Presentation] コロイド液体における変位相関の粘弾性モデルの数値的検証2020

    • Author(s)
      大信田丈志, 大槻道夫, 後藤晋, 松本剛
    • Organizer
      日本物理学会2020年秋季大会(オンライン)
    • Related Report
      2020 Research-status Report
  • [Presentation] オイラー、ラグランジュ記述の乱流速度フーリエ成分の相関関数と線形応答関数の時間スケール2020

    • Author(s)
      松本剛, 大槻道夫, 大信田丈志, 後藤晋
    • Organizer
      日本流体力学会 年会2020(オンライン)
    • Related Report
      2020 Research-status Report
  • [Presentation] 周期的せん断を受けたジャミング転移点近傍の粉体レオロジー2019

    • Author(s)
      大槻道夫
    • Organizer
      日本地球惑星連合大会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Shear jamming, fragile states, and yielding in granular materials under oscillatory shear2019

    • Author(s)
      Michio Otsuki
    • Organizer
      4th Annual Packing Problems Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 摩擦のある粉体におけるYielding transition2019

    • Author(s)
      大槻道夫, 早川尚男
    • Organizer
      日本物理学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Shear jamming and yielding transition in frictional granular materials2019

    • Author(s)
      Michio Otsuki
    • Organizer
      2019 International Workshop on Glass Physics in Beijing
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ペーストの記憶効果の2次元弾塑性モデル2019

    • Author(s)
      大槻道夫
    • Organizer
      ソフトマター研究会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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