Constitutive response of idealized granular media under the principal stress axes rotation
Constitutive response of idealized granular media under the principal stress axes rotation
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DOI：
10.1016/j.ijplas.2008.05.001
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发表时间：
2008-11
影响因子：
9.8
通讯作者：
S. Tsutsumi;K. Kaneko
中科院分区：
文献类型：
--
作者：
S. Tsutsumi;K. Kaneko
本文致力于理解的现象，导致各向异性和非同轴的颗粒材料。本文采用颗粒单元法实现了颗粒介质静态条件下的三维数值模拟。该方法已被纳入所谓的准静态平衡问题的数学均匀化理论，这使我们能够获得宏观/唯象的非弹性变形响应的一个代表性的体积元（RVE）。为了研究由颗粒单元法求解的RVE的各向异性宏观变形特性，进行了一系列涉及主应力轴纯旋转的数值实验，并讨论了其结果与诱导各向异性和非共轴性的关系。
This paper is dedicated to the understanding of the phenomena, which give rise to anisotropy and non-coaxiality in granular materials. In achieving three-dimensional numerical simulation under static condition of granular media, granular element method (GEM) is adopted in this study. The method has been incorporated into the so-called mathematical homogenization theory for quasi-static equilibrium problems, which enables us to obtain the macroscopic/phenomenological inelastic deformation response of a representative volume element (RVE). To examine the anisotropic macroscopic deformation properties of the assumed RVE, which is solved by granular element method (GEM), a series of numerical experiments involving the pure rotation of the principal stress axes are carried out, and its results are discussed in relation to induced anisotropy and non-coaxiality.