楕円孔を有するCFRP積層板の圧縮破壊に関する数値シミュレーション

DOI Web Site Web Site 参考文献10件
  • 清水 紗利子
    東京理科大学大学院基礎工学研究科材料工学専攻
  • 佐藤 光桜
    東京理科大学大学院基礎工学研究科材料工学専攻
  • 小柳 潤
    東京理科大学基礎工学部材料工学科
  • 末益 博志
    宇宙航空研究開発機構航空技術部門構造・複合材技術研究ユニット
  • 向後 保雄
    東京理科大学基礎工学部材料工学科

書誌事項

タイトル別名
  • Numerical Simulation for Compressive Failure of CFRP Laminates with Various Shaped Holes
  • ダエンコウ オ ユウスル CFRP セキソウバン ノ アッシュク ハカイ ニ カンスル スウチ シミュレーション

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<p>The effect of stress concentration on compressive failure behavior of carbon-fiber reinforced plastic e laminates with open holes was experimentally and numerically investigated. The aspect ratio of the elliptic hole was changed to determine the dependence of the failure behavior on stress concentration. The finite element analysis was implemented by using the ABAQUS 2017 software and a dynamic explicit solving method. Continuum shell elements incorporating Hashin’s failure criteria and cohesive interaction, which is a combined function of the general contact definition and cohesive traction-separation law, were used to model lamina and interlaminar damage growths, respectively. The damage initiations were defined by critical stresses, while the damage evolutions were defined by energy assumptions of softening behavior for the continuum shell elements and cohesive interactions. The numerical results of the stresses at initial damage occurrences and ultimate failures agreed well with the experimental results for the specimens of various aspect ratios. Moreover, the numerical and experimental results of the damage behavior of the 0º ply were in good agreement. Furthermore, we discussed internal damages and delamination behaviors, which are difficult to observe through experiments, based on the numerical results.</p>

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