A constitutive platform for sand modeling

被引:0
|
作者
Li, XS [1 ]
机构
[1] Hong Kong Univ Sci & Technol, Dept Civil Engn, Hong Kong, Hong Kong, Peoples R China
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暂无
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This paper addresses the issue of sand dilatancy and the impact of fabric anisotropy. A platform model based on the concept of state-dependent dilatancy is introduced first, and a joint invariant, A, of the stress tensor and a second-order fabric tensor is developed afterwards. With this objective measure of the sand anisotropy state, the dilatancy and plastic hardening are formulated, and the critical-state line is assumed non-unique in the e-p-q space but unique in the e-p-q-A space. This simple approach is rigorous and correct within the fundamentals of anisotropic constitutive modeling and captures some of the most important features of stress-strain-strength responses of sand including the impact of inherent fabric anisotropy under proportional loading conditions.
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页码:47 / 54
页数:8
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