Heterogeneity and patterning in the quasi-static behavior of granular materials

被引：0
|
作者：
Matthew R. Kuhn
机构：
[1] Dept. of Civil and Env. Engineering,
[2] School of Engineering,undefined
[3] University of Portland,undefined
[4] 5000 N. Willamette Blvd.,undefined
[5] Portland,undefined
[6] OR 97203,undefined
[7] USA e-mail: kuhn@up.edu Fax: 503-943-7316 Tel.: 503-943-7361,undefined
来源：
Granular Matter | 2003年 / 4卷
关键词：
Keywords Granular material, Heterogeneous material, Patterning, Microstructure, Discrete Element Method;
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学科分类号：
摘要：
 Heterogeneity is classified in five categories– topologic, geometric, kinematic, static, and constitutive–and the first four categories are investigated in a numerical DEM simulation of biaxial compression. The simulation experiments show that the topology and geometric fabric become more variable during loading. The measured fluctuations in inter-particle movements are large, they increase with loading, and they extend to distances of at least eight particle diameters. Deformation and rotation heterogeneity are large and are expressed in spatial patterning. Stress heterogeneity is moderate throughout loading.
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页码：155 / 166
页数：11
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