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

Material type: 文書・図像類

Author: 桑水流, 理ほか

Publisher: 一般社団法人軽金属学会

Publication date: 2014-11

Material Format: Digital

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Note (General)：: 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....

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Material Type: 文書・図像類
Title: 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
Author/Editor: 桑水流, 理
宇都宮, 登雄
半谷, 禎彦
明城, 拓哉
Author Heading: 桑水流, 理
宇都宮, 登雄
半谷, 禎彦
明城, 拓哉
Publication, Distribution, etc.: 一般社団法人軽金属学会
Publication Date: 2014-11
Publication Date (W3CDTF): 2014-11
Periodical title: 軽金属
No. or year of volume/issue: 64 11
Volume: 64
Issue: 11
Pages: 551-556
Text Language Code: jpn
Subject Heading: porous metals
functional materials
finite element method
image-based analysis
pore structure
X-ray computed tomography
stress concentration
Target Audience: 一般
Note (General): 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.
Access Restrictions: 限定公開
Related Material (DOI): 10.2464/jilm.64.551
Data Provider (Database): 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
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ