Impact Collapse Analysis of Thin-Walled Structure Using Distinct Element Method

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  • NAGATA Keisuke
    連絡先著者（Corresponding author）：nagata.keisuke@b.mbox.nagoya-u.ac.jp 名古屋大学大学院工学研究科（博士前期課程）
  • ARAI Masahiro
    名古屋大学大学院工学研究科航空宇宙工学専攻
  • GOTO Keita
    名古屋大学ナショナルコンポジットセンター

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  • 個別要素法による薄肉構造物の衝突崩壊解析
  • コベツ ヨウソホウ ニ ヨル ウスニク コウゾウブツ ノ ショウトツ ホウカイ カイセキ

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In the present paper, an alternative numerical approach based on distinct element method (DEM) for the impact collapse analysis of thin-walled structures was proposed. Starting from the equilibrium equation for the thin plate bending, new element for bending and twisting has been introduced using single layer element in DEM. Furthermore, non-linear element taking into account the plastic deformation has been applied in the present method. The validity of the present numerical approach was considered and inspected through some numerical demonstrations for the impact collapse and plastic buckling problems of thin-walled structure.

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