ポーラスアルミニウムのイメージベース有限要素解析とその精度検証

• 資料種別: 文書・図像類
• タイトル: ポーラスアルミニウムのイメージベース有限要素解析とその精度検証
• 著者・編者: 桑水流, 理; 宇都宮, 登雄; 半谷, 禎彦; 明城, 拓哉
• 著者標目: 桑水流, 理; 宇都宮, 登雄; 半谷, 禎彦; 明城, 拓哉
• 出版事項: 一般社団法人軽金属学会
• 出版年月日等: 2014-11
• 出版年（W3CDTF）: 2014-11
• タイトル（掲載誌）: 軽金属
• 巻号年月日等（掲載誌）: 64 11
• 掲載巻: 64
• 掲載号: 11
• 掲載ページ: 551-556
• 本文の言語コード: jpn
• 件名標目: porous metals; functional materials; finite element method; image-based analysis; pore structure; X-ray computed tomography; stress concentration
• 対象利用者: 一般
• 一般注記: 出版タイプ： AO; Porous aluminum can be a good shock absorber, and its collapse behavior and shock absorbing property is desired to be optimized by the pore structure. To unravel the collapse mechanism, we have utilized the image-based finite element analysis. The pore structure was captured by the micro-focus X-ray computed tomography, and the finite element model was automatically and easily generated by using the uniform cubic element, that is, voxel element. The elastic property of two samples of porous aluminum was evaluated by the finite element analysis, and compared with the experimental result of static compression test. The effect of element size on the elastic numerical results was also investigated by changing the size of voxel element. However, the elastic property obtained by the finite element analysis completely differed from the initial gradient of the stress–strain curve obtained by the experiment. On the other hand, the elastic-plastic analysis gives a good estimation of the initial gradient of the stress–strain curve. We concluded that the compressive collapse behavior was affected by the elastic-plastic property of material along with the high stress concentration from the beginning of contact with the compression plate and the plateau region was realized by the finite deformation of the cell walls.
• 関連情報（DOI）: 10.2464/jilm.64.551; https://doi.org/10.2464/jilm.64.551
• 連携機関・データベース: 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• 提供元機関・データベース: 福井大学 : 福井大学学術機関リポジトリ