Effect of Size Polydispersity on Micromechanical Properties of Static Granular Materials

被引：2

作者：

Shaebani, M. R. ^{[1
,2
]}

Madadi, M. ^{[3
]}

Luding, S. ^{[4
]}

Wolf, D. E. ^{[2
]}

机构：

[1] Univ Saarland, Dept Theoret Phys, D-66041 Saarbrucken, Germany

[2] Univ Duisburg Essen, Dept Theoret Phys, D-47048 Duisburg, Germany

[3] Curtin Univ, Dept Explorat Geophys, Perth, WA 6845, Australia

[4] Univ Twente, CTW, Multi Scale Mech MSM, POB 217, NL-7500 AE Enschede, Netherlands

来源：

POWDERS AND GRAINS 2013 | 2013年 / 1542卷

关键词：

polydispersity; granular solids; fabric; micromechanics; DYNAMICS; PACKINGS;

D O I：

10.1063/1.4812071

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We analytically investigate the influence of particle size polydispersity on the micromechanical properties of granular packings. In order to approximate the macroscopic quantities in terms of the microscale details, we develop a mean-field approach. It is shown that the trace of the fabric and stress tensors, and the elements of the stiffness tensor can be expressed in terms of dimensionless correction factors (which depend only on the moments of the size distribution), besides the average packing properties such as packing fraction, mean coordination number, and mean normal force. The results of numerical simulations confirm the validity of our analytical predictions, as long as the size distribution is not too wide.

引用

页码：875 / 878

页数：4

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