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サイトウ クニヤス
Kuniyasu Saitoh
齊藤 国靖 所属 京都産業大学 理学部 物理科学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2017/06 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | A microscopic theory for discontinuous shear thickening of frictional granular materials |
| 執筆形態 | その他 |
| 掲載誌名 | EPJ Web of Conferences |
| 出版社・発行元 | EDP Sciences |
| 巻・号・頁 | 140 |
| 著者・共著者 | Kuniyasu Saitoh,F. Radjai,Hisao Hayakawa,S. Nezamabadi,S. Luding,J.Y. Delenne |
| 概要 | We extend a recent theory for the rheology of frictionless granular materials [1] to the case of frictional disks in two dimensions. Employing a frictional contact model for molecular dynamics simulations, we derive difference equations of the shear stress, the granular temperature, and the spin temperature from the generalized Green-Kubo formula, where all the terms are given by microscopic expressions. The numerical solutions of the difference equations not only describe the flow curve, but also reproduce the hysteresis of shear stress, which can be the signature of discontinuous shear thickening of frictional disks. |
| DOI | 10.1051/epjconf/201714003063 |
| ISSN | 2100-014X |
| PermalinkURL | http://www.scopus.com/inward/record.url?eid=2-s2.0-85024122505&partnerID=MN8TOARS |
| researchmap用URL | http://orcid.org/0000-0002-3511-2710 |