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Non-local continuum modeling of dense particulate systems

Research Project

Project/Area Number 18K13464
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 13010:Mathematical physics and fundamental theory of condensed matter physics-related
Research InstitutionKyoto Sangyo University (2020-2021)
Tohoku University (2018-2019)

Principal Investigator

Saitoh Kuniyasu  京都産業大学, 理学部, 准教授 (10775753)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsレオロジー / 粘弾性 / 弾性 / 塑性 / 音波 / 拡散 / 輸送現象 / 弾性体 / 音波特性 / 粘性効果 / ジャミング転移 / 動的臨界現象 / 弾性波 / 弾塑性 / ジャミング / 分子動力学法 / 連続体理論 / 非局所性
Outline of Final Research Achievements

Understanding of mechanical responses of particulate systems is crucial to engineering technology. Applying deformations to particulate systems, one observes that constituents are rearranged. Such rearrangements are spatially correlated and thus the mechanical response cannot be determined by the deformation at the same place. In this research project, we proposed a non-local description of the mechanical response of particulate systems. Employing molecular dynamics simulations, we have numerically analyzed spatial correlations between the particles as well as their dynamics at a microscopic scale. We have measured the viscosity and implemented it to the non-local description. Our method succeeded in reproducing velocity profiles of the Kolmogorov flows. We also studied the stress relaxation, sound properties, plastic deformations, diffusion, and avalanche of particulate systems and concluded that microscopic dynamics of the particles play a significant role.

Academic Significance and Societal Importance of the Research Achievements

粉体、泡、エマルジョンなど、私達の身の周りには巨視的な大きさの粒子が数多く存在します。これらの粒子が集団として運動するときの振る舞いは、水や空気のような流体とは全く異なり、予測困難なものです。その要因として、ランダムな粒子構造や粒子の複雑な配置替え、長距離におよぶ空間相関などが挙げられます。この様な粒子系の集団運動を精密に調べるには、分子動力学法による数値シミュレーションが有効で、本研究でも高密度粒子系の様々な物性を数値的に調べてきました。その結果、粒子系の様々な物性に対して非局所性を軸とした新しい見解を得ることができました。今後、これらの成果を工学的な応用に拡張していくことが重要です。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (24 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (5 results) Journal Article (14 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 14 results,  Open Access: 8 results) Presentation (5 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results)

  • [Int'l Joint Research] デルフト工科大学(オランダ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Delft University of Technology/University of Twente(オランダ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Delft University of Technology/University of Twente(オランダ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of Montpellier(フランス)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] デルフト工科大学/トゥエンテ大学(オランダ)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Dynamic Susceptibilities in Dense Soft Athermal Spheres Under a Finite-Rate Shear2021

    • Author(s)
      Norihiro Oyama, Takeshi Kawasaki, and Kuniyasu Saitoh
    • Journal Title

      Frontiers in Physics

      Volume: 9 Pages: 1-9

    • DOI

      10.3389/fphy.2021.667103

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The role of friction in statistics and scaling laws of avalanches2021

    • Author(s)
      Kuniyasu Saitoh
    • Journal Title

      The European Physical Journal E

      Volume: 44 Issue: 6

    • DOI

      10.1140/epje/s10189-021-00089-8

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sound damping in soft particle packings: the interplay between configurational disorder and inelasticity2021

    • Author(s)
      Saitoh Kuniyasu、Mizuno Hideyuki
    • Journal Title

      Soft Matter

      Volume: - Issue: 15 Pages: 4204-4212

    • DOI

      10.1039/d0sm02018d

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Critical Scaling of Diffusion Coefficients and Size of Rigid Clusters of Soft Athermal Particles Under Shear2020

    • Author(s)
      Saitoh Kuniyasu、Kawasaki Takeshi
    • Journal Title

      Frontiers in Physics

      Volume: 8 Pages: 99-99

    • DOI

      10.3389/fphy.2020.00099

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Structural and mechanical characteristics of sphere packings near the jamming transition: From fully amorphous to quasiordered structures2020

    • Author(s)
      Mizuno Hideyuki、Saitoh Kuniyasu、Silbert Leonardo E.
    • Journal Title

      Physical Review Materials

      Volume: 4 Issue: 11 Pages: 115602-115602

    • DOI

      10.1103/physrevmaterials.4.115602

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Elastic wave propagation in dry granular media: Effects of probing characteristics and stress history2020

    • Author(s)
      Cheng Hongyang、Luding Stefan、Saitoh Kuniyasu、Magnanimo Vanessa
    • Journal Title

      International Journal of Solids and Structures

      Volume: 187 Pages: 85-99

    • DOI

      10.1016/j.ijsolstr.2019.03.030

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Universal Relaxation Dynamics of Sphere Packings below Jamming2020

    • Author(s)
      Ikeda Atsushi、Kawasaki Takeshi、Berthier Ludovic、Saitoh Kuniyasu、Hatano Takahiro
    • Journal Title

      Physical Review Letters

      Volume: 124 Issue: 5 Pages: 1-6

    • DOI

      10.1103/physrevlett.124.058001

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Stress Relaxation above and below the Jamming Transition2020

    • Author(s)
      Saitoh Kuniyasu、Hatano Takahiro、Ikeda Atsushi、Tighe Brian P.
    • Journal Title

      Physical Review Letters

      Volume: 124 Issue: 11 Pages: 1-5

    • DOI

      10.1103/physrevlett.124.118001

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Non-local effects in inhomogeneous flows of soft athermal disks2019

    • Author(s)
      Kuniyasu Saitoh、Brian P. Tighe
    • Journal Title

      Physical Review Letters

      Volume: 122 Issue: 18 Pages: 188001-188001

    • DOI

      10.1103/physrevlett.122.188001

    • Related Report
      2019 Research-status Report 2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Avalanche Interpretation of the Power-Law Energy Spectrum in Three-Dimensional Dense Granular Flow2019

    • Author(s)
      Oyama Norihiro、Mizuno Hideyuki、Saitoh Kuniyasu
    • Journal Title

      Physical Review Letters

      Volume: 122 Issue: 18 Pages: 1-6

    • DOI

      10.1103/physrevlett.122.188004

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rotational sound in disordered granular materials2019

    • Author(s)
      Saitoh Kuniyasu、Shrivastava Rohit K.、Luding Stefan
    • Journal Title

      Physical Review E

      Volume: 99 Issue: 1 Pages: 012906-012906

    • DOI

      10.1103/physreve.99.012906

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Transition rates for slip-avalanches in soft athermal disks under quasi-static simple shear deformations2019

    • Author(s)
      Saitoh Kuniyasu、Oyama Norihiro、Ogushi Fumiko、Luding Stefan
    • Journal Title

      Soft Matter

      Volume: 15 Issue: 17 Pages: 3487-3492

    • DOI

      10.1039/c8sm01966e

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Avalanche interpretation of the power-law energy spectrum in three-dimensional dense granular flow2019

    • Author(s)
      Norihiro Oyama、Hideyuki Mizuno、Kuniyasu Saitoh
    • Journal Title

      Physical Review Letters

      Volume: 122

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Elastic wave propagation in dry granular media: effects of probing characteristics and stress history2019

    • Author(s)
      Hongyang Cheng、Stefan Luding、Kuniyasu Saitoh、Vanessa Magnanimo
    • Journal Title

      International Journal of Solids and Structures

      Volume: 122

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 変形可能粒子のジャミング転移2021

    • Author(s)
      山中貞人, Brian P. Tighe, 齊藤国靖
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Viscoelastic sound damping in granular materials2019

    • Author(s)
      Kuniyasu Saitoh
    • Organizer
      Granular Matter Across Scales, Lorentz Center, Leiden University, Leiden, The Netherlands, March 18-22, 2019.
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Stress relaxation above and below the jamming transition2018

    • Author(s)
      Kuniyasu Saitoh
    • Organizer
      Shechtman-Suresh Convocation & Honorary Symposium, Aristotle University of Thessaloniki, Thessaloniki, Greece, November 30-December 3, 2018.
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Non-local effects in inhomogeneous flows of soft athermal disks2018

    • Author(s)
      Kuniyasu Saitoh
    • Organizer
      Physics of Jammed Matter, Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan, October 26-27, 2018.
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Non-local flow behavior of soft athermal particles2018

    • Author(s)
      Kuniyasu Saitoh
    • Organizer
      Rheology of disordered particles - suspensions, glassy and granular materials, Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan, June 18-29, 2018.
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2023-01-30  

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