Departmental Bulletin Paper 個別要素法による粒状体群のせん断シミュレーションにおける摩擦処理

板谷, 知洋  ,  Itadani, Tomohiro  ,  大西, 泰史  ,  Onishi, Yasushi  ,  吉田, 長行  ,  Yoshida, Nagayuki

(29)  , pp.70 - 75 , 2015-04-01 , 法政大学情報メディア教育研究センター
ISSN:1882-7594
Description
個別要素法を用いて一面せん断試験を行う際、接線方向には摩擦が関与するため結果に影響がでる。そこで本研究では、接線方向力及びトルクの評価方法を再検討し、せん断シミュレーションを通じて新たな手法の有用性を確認する。
In the Distinct Element Method (DEM), Friction is introduced in the tangential direction between the two particles. The way of its modeling could greatly influence on the analytical result. Therefore the ordinal calculation scheme have to be reconsidered in the tangential direction of the contact surface. In this paper, the numerical procedure taking account of the stick-slip phenomenon is introduced to deal with the friction among particles more precisely. The analytical result shows that smoothness of force and displacement relation can be improved. Furthermore it is confirmed that the random size on particles is relatively more stable than the uniform size. Keywords : DEM, the direct shear test, tangential force, Stick-Slip phenomenon
Full-Text

http://repo.lib.hosei.ac.jp/bitstream/10114/11388/3/vol29_10.pdf

Number of accesses :  

Other information