スティフナ/スキン間簡便はく離進展シミュレーション Simulation of Debonding for Stiffener/Skin Composite Structures

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Stiffener/skin structures in integrated composite parts suffer debonding between stiffener and skin due to loading. Application of fracture mechanics to assess structural integrity of the integrated composite parts is difficult because of complexity of the structural configuration and inhomogeneity of composite materials. A simulation method to assess the structural integrity that predicts onset and growth of debonding and estimates the stiffness degradation due to debonding is needed. In this study, a simulation method based on FEM is investigated for stiffener/skin structures. The simula-tion method is intended to be versatile and easy to implement for commercial FEM codes. Stiffener/skin structures are modeled as cohesion of shell elements. If debonding is judged by an energy release rate criterion, the cohesion is released. Delamination growth in a DCB specimen and an ELS specimen is simulated and compared with theoretical and experimental results to demonstrate the feasibility. Thus, the debonding of stiffener/skin structures is simulated, and is reproduced success-fully by the proposed method.

収録刊行物

  • 日本複合材料学会誌 = Journal of the Japan Society for Composite Materials

    日本複合材料学会誌 = Journal of the Japan Society for Composite Materials 30(5), 182-191, 2004-09-15

    JAPAN SOCIETY FOR COMPOSITE MATERIALS

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各種コード

  • NII論文ID(NAID)
    10013665918
  • NII書誌ID(NCID)
    AN00196748
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03852563
  • NDL 記事登録ID
    7092278
  • NDL 雑誌分類
    ZM16(科学技術--科学技術一般--工業材料・材料試験)
  • NDL 請求記号
    Z14-655
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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