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Continuum-mechanical, Anisotropic Flow model for polar ice masses, based on an anisotropic Flow Enhancement factor

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タイトル: Continuum-mechanical, Anisotropic Flow model for polar ice masses, based on an anisotropic Flow Enhancement factor
著者: Placidi, Luca 著作を一覧する
Greve, Ralf 著作を一覧する
Seddik, Hakime 著作を一覧する
Faria, Sérgio H. 著作を一覧する
キーワード: Continuum mechanics
Anisotropy
Ice
Mixtures
Recrystallization
発行日: 2010年 3月
出版者: Springer Berlin
誌名: Continuum Mechanics and Thermodynamics
巻: 22
号: 3
開始ページ: 221
終了ページ: 237
出版社 DOI: 10.1007/s00161-009-0126-0
抄録: A complete theoretical presentation of the Continuum-mechanical, Anisotropic Flow model, based on an anisotropic Flow Enhancement factor (CAFFE model) is given. The CAFFE model is an application of the theory of mixtures with continuous diversity for the case of large polar ice masses in which induced anisotropy occurs. The anisotropic response of the polycrystalline ice is described by a generalization of Glen's flow law, based on a scalar anisotropic enhancement factor. The enhancement factor depends on the orientation mass density, which is closely related to the orientation distribution function and describes the distribution of grain orientations (fabric). Fabric evolution is governed by the orientation mass balance, which depends on four distinct effects, interpreted as local rigid body rotation, grain rotation, rotation recrystallization (polygonization) and grain boundary migration (migration recrystallization), respectively. It is proven that the flow law of the CAFFE model is truly anisotropic despite the collinearity between the stress deviator and stretching tensors.
資料タイプ: article
URI: http://hdl.handle.net/2115/42804
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: Greve Ralf

 

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