ダウンロード数: 665

このアイテムのファイル:
ファイル 記述 サイズフォーマット 
jsms.59.219.pdf514.53 kBAdobe PDF見る/開く
タイトル: 粒状体個別要素法における岩石力学物性の設定に及ぼす粒子数および粒度分布の影響
その他のタイトル: Effects of Particle Number and Size Distribution on Macroscopic Mechanical Properties of Rock Models in DEM
著者: 清水, 浩之  KAKEN_name
村田, 澄彦  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0003-1877-9537 (unconfirmed)
石田, 毅  KAKEN_id
著者名の別形: SHIMIZU, Hiroyuki
MURATA, Sumihiko
ISHIDA, Tsuyoshi
キーワード: Distinct Element Method (DEM)
Rock
Particle size distribution
Porosity
Macroscopic mechanical properties
発行日: 2010
出版者: 日本材料学会
引用: 清水 浩之, 村田 澄彦, 石田 毅, "粒状体個別要素法における岩石力学物性の設定に及ぼす粒子数および粒度分布の影響", 材料, Vol. 59, No. 3, pp.219-226 (2010).
誌名: 材料
巻: 59
号: 3
開始ページ: 219
終了ページ: 226
抄録: In this study, a new Distinct Element Method (DEM) code had been developed, and a series of rock test simulations, such as uniaxial compression test, uniaxial tension test and Brazilian test are performed to investigate the effects of particle number and size distribution on macroscopic mechanical properties of rock models. Each simulation result was in good agreement with actual experimental results conducted by previous researchers, and the findings obtained from this study can be summarized as follows. The variation of calculated values of macroscopic mechanical properties decreases with increasing the number of particles. When the number of particles is 10000 or more, stable results are obtained as a rock test. Moreover, macroscopic mechanical properties of rock model, such as uniaxial compressive strength, Young's modulus and uniaxial tensile strength are significantly affected by porosity of the rock model. Since small particles fill the space among large particles, the porosity of the rock model decreases with increasing the maximum/minimum radius ratio of the particles, and particles are densely packed in the rock model. When the particle is closely arranged, the displacement of each particle is restrained with the adjacent particles even if the bond between particles breaks. As a result, the macroscopic mechanical properties of rock model increase greatly.
著作権等: Copyright (c) 2010 日本材料学会
許諾条件により本文は2011-03-01に公開
URI: http://hdl.handle.net/2433/108302
DOI(出版社版): 10.2472/jsms.59.219
出現コレクション:学術雑誌掲載論文等

アイテムの詳細レコードを表示する

Export to RefWorks


出力フォーマット 


このリポジトリに保管されているアイテムはすべて著作権により保護されています。