拡張型有限要素法を用いた固有振動数に基づく2次元梁部材のき裂同定(機械力学,計測,自動制御) Crack Identification in a Two Dimensional Beam Member Based on Eigen Frequencies Using X-FEM(Mechanical Systems)

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A new framework of identifying the crack position in a structural member in terms of numerical simulation is presented. In this methodology, the extended finite element method (XFEM) is used to analyze the vibration problem of the structure which has a straight crack on its surface. To identify the position of a crack, the gradient of a evaluation function is used, and that function is calculated by using the eigen frequencies of the structural members both with real crack position and with estimated crack position. In the numerical examples, two dimensional cantilever beam members are used, and the identification of crack position has conducted. In some cases the evaluation function has several residual points, or has very flat distribution around the real crack tip. To identify the crack position certainly, setting up several starting points becomes reasonable approach.

収録刊行物

  • 日本機械学会論文集 C編

    日本機械学会論文集 C編 76(772), 3274-3281, 2010

    一般社団法人 日本機械学会

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各種コード

  • NII論文ID(NAID)
    110008006832
  • NII書誌ID(NCID)
    AN00187463
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03875024
  • NDL 記事登録ID
    10938907
  • NDL 雑誌分類
    ZN11(科学技術--機械工学・工業)
  • NDL 請求記号
    Z16-1056
  • データ提供元
    CJP書誌  NDL  NII-ELS  J-STAGE 
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