引張軟化モデルに基づく花こう岩の封圧依存破壊挙動の数値シミュレーションと実験的検証

DOI Web Site 被引用文献1件
  • 荻窪 裕樹
    東北大学大学工学部附属破壊力学応用研究施設
  • 橋田 俊之
    東北大学大学工学部附属破壊力学応用研究施設
  • 庄子 哲雄
    東北大学大学工学部附属破壊力学応用研究施設
  • 高橋 秀明
    東北大学大学工学部附属破壊力学応用研究施設

書誌事項

タイトル別名
  • Numerical simulation of the fracture behavior in granite under confining pressures based on the tension-softening law and experimental verification.
  • ヒッパリ ナンカ モデル ニ モトズク カコウガン ノ フウアツ イゾン ハカ

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抄録

A numerical analysis is presented which predicts the fracture behavior of granite under high confining pressures. The numerical simulation uses a modified boundary element method, and incorporates the tension-softening model developed for characterizing the growth of the fracture process zone in rock.<BR>Fracture toughness tests of granite have been conducted under confining pressures of 15.68 MPa and 26.46 MPa using compact tension specimens which were jacketed with urethane coating to eliminate the pore pressure effect.<BR>It is demonstrated that the numerical method developed in this investigation can well simulate the experimentally obtained load-displacement records under a wide range of confining pressure from a knowledge of the tension-softening law. Based on the result the tension-softening law is found to be independent material property. Furthermore, source mechanism for the pressure sensitive fractures of the granite is discussed by exaamining the growth behavior of the fracture process zone simulated using the numerical method.

収録刊行物

  • 資源と素材

    資源と素材 107 (4), 195-200, 1991

    一般社団法人 資源・素材学会

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