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2008 Fiscal Year Final Research Report

Mechanics of rapid flowing granular materials

Research Project

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Project/Area Number 18560482
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Geotechnical engineering
Research InstitutionSaitama University

Principal Investigator

IWASHITA Kazuyoshi  Saitama University, 大学院・理工学研究科, 教授 (40203377)

Co-Investigator(Kenkyū-buntansha) SUZUKI Kiichi  埼玉大学, 大学院・理工学研究科, 准教授 (70282423)
Project Period (FY) 2006 – 2008
Keywords地盤工学 / 自然災害 / 土砂災害 / 斜面崩壊 / 粒状体 / マイクロメカニクス
Research Abstract

粒状体斜面が高速流動に移行する課程を高速せん断実験と数値実験により再現した。その結果、粒子からなる微視的構造が崩壊する際に粒子回転が生じる、微視的構造のサイズは流れが遅いと大きくなるが流れの密度の影響は受けない、粒状体斜面の崩壊解析より粗い床面では粒子流の全層で粒子間の衝突や転がりで運動量が消散されるが滑らかな床面では粒子群のなかのある層のみがせん断帯として変形しその内部で粒子回転が卓越していることが確認された

  • Research Products

    (8 results)

All 2009 2008 2007

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (2 results)

  • [Journal Article] Measurement of particle dynamics inrapid granular shear flows, Journal ofEngineering Mechanics2009

    • Author(s)
      Mahmood S., Dhakal K. and Iwashita
    • Journal Title

      ASCE Volume 135(4)

      Pages: 285-294

    • Peer Reviewed
  • [Journal Article] Detecting collisions and findingcontact durations in experimentalgranular flow, Journal of AppliedMechanics2008

    • Author(s)
      S. Dhakal, K. Iwashita and M. Oda
    • Journal Title

      JSCE Volume.11

      Pages: 477-486

    • Peer Reviewed
  • [Journal Article] Modeling ofmicrostructural evolution to simulateundrained shear strength variation ofKaolin clay2008

    • Author(s)
      Minh N.H., Oda M., Suzuki K. and Kurukulasuriya L.C
    • Journal Title

      Journal of AppliedMechanics, JSCE Vol.11

      Pages: 389-398

    • Peer Reviewed
  • [Journal Article] A constitutive model of sand withinherent transverse isotropy, considering effects of b values2008

    • Author(s)
      Suzuki K., Yanagisawa E. and Odajima M
    • Journal Title

      Australian Geomechanics Vol.43, No.4

      Pages: 89-98

    • Peer Reviewed
  • [Journal Article] Simulation of upwardseepage flow behavior using one-columnmodel by DEM taking an interaction withfluid into account2007

    • Author(s)
      K.Suzuki, J.P.Bardet, M.Oda, K.Iwashita, Y.Tsuji, T.Tanaka, T.Kawaguchi
    • Journal Title

      J. Geotech. andGeoenvir. Engrg., ASCE Volume 133, Issue 1

      Pages: 104-109

    • Peer Reviewed
  • [Journal Article] 高速せん断を受ける円盤粒子流に生じるせん断応力の特性2007

    • Author(s)
      一場勝幸, 岩下和義, 小田匡寛
    • Journal Title

      土木学会論文集, 土木学会論文集C Vol.63 No.3

      Pages: 763-771

    • Peer Reviewed
  • [Presentation] Reliability based design safety factorfor soil liquefaction(93-96)2008

    • Author(s)
      Jha S.K., Suzuki K. and Oda M
    • Organizer
      Proceedings ofthe Tenth International Summer Symposium
    • Place of Presentation
      埼玉大学
    • Year and Date
      20080900
  • [Presentation] Effects of confining pressure on thestrength behaviour of granular materialsimulated by the discrete elementmethod2007

    • Author(s)
      Alim M.A., Suzuki K. and Iwashita K
    • Organizer
      Proceedings of the TenthInternational AssociationforEngineering Geology and the EnvironmentCongress
    • Place of Presentation
      埼玉大学
    • Year and Date
      2007-09-10

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Published: 2010-06-10   Modified: 2016-04-21  

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