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ファイル | 記述 | サイズ | フォーマット | |
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PhysRevE.101.032905.pdf | 1.69 MB | Adobe PDF | 見る/開く |
タイトル: | Shear jamming, discontinuous shear thickening, and fragile states in dry granular materials under oscillatory shear |
著者: | Otsuki, Michio Hayakawa, Hisao https://orcid.org/0000-0003-3462-5562 (unconfirmed) |
著者名の別形: | 大槻, 道夫 早川, 尚男 |
キーワード: | Granular flows Rheology Polymers & Soft Matter |
発行日: | Mar-2020 |
出版者: | American Physical Society (APS) |
誌名: | Physical Review E |
巻: | 101 |
号: | 3 |
論文番号: | 032905 |
抄録: | We numerically study the linear response of two-dimensional frictional granular materials under oscillatory shear. The storage modulus $G'$ and the loss modulus $G''$ in the zero strain rate limit depend on the initial strain amplitude of the oscillatory shear before measurement. The shear jammed state (satisfying $G'>0$) can be observed at an amplitude greater than a critical initial strain amplitude. The fragile state is defined by the emergence of liquid-like and solid-like states depending on the form of the initial shear. In this state, the observed $G'$ after the reduction of the strain amplitude depends on the phase of the external shear strain. The loss modulus $G''$ exhibits a discontinuous jump corresponding to discontinuous shear thickening in the fragile state. |
著作権等: | ©2020 American Physical Society |
URI: | http://hdl.handle.net/2433/286784 |
DOI(出版社版): | 10.1103/physreve.101.032905 |
PubMed ID: | 32289976 |
出現コレクション: | 学術雑誌掲載論文等 |
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