Modeling of concrete’s meso-structure by phase-field method and its application to numerical experiment

DOI
  • KURUMATANI Mao
    Department of Civil, Architectural, and Environmental Engineering, Ibaraki University
  • KATO Takumi
    Department of Civil, Architectural, and Environmental Engineering, Ibaraki University
  • MURAMATSU Mayu
    Department of Mechanical Engineering, Faculty of Science and Technology, Keio University

Bibliographic Information

Other Title
  • フェーズフィールド法によるコンクリートのメゾスケールモデルの作成とその数値実験への適用

Abstract

<p>This paper proposes a method for modeling three-dimensional (3D) concrete’’s meso-structure composed of mortar and coarse aggregates. The method consists of an automatic generation of coarse aggregates and their random arrangement in concrete’’s domain. The phase-field method is applied to generate large number of coarse aggregates, each of which has arbitrary 3D shape. The aggregates are arranged randomly in concrete’’s domain by repeating trial-and-error calculation with random numbers. After explaining the modeling procedure, several numerical examples are presented to demonstrate the validity and availability of the proposed method. First, the comparison of meso-scale model with an actual concrete verifies the validity of the method. The availability is then demonstrated by generating concrete’’s meso-scale models with various grain size distributions. Finally, the application to a numerical experiment reveals that the proposed method allows the simulation of 3D crack propagation behavior in concrete’’s meso-scale.</p>

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Details 詳細情報について

  • CRID
    1390848250113541376
  • NII Article ID
    130007847829
  • DOI
    10.11421/jsces.2020.20200008
  • ISSN
    13478826
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
    • KAKEN
  • Abstract License Flag
    Disallowed

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