Determination of elastic properties of particles using single particle compression test

被引：44
|
作者：
Portnikov, D. [1 ]
Kalman, H. [1 ]
机构：
[1] Ben Gurion Univ Negev, Dept Mech Engn, Lab Conveying & Handling Particulate Solids, IL-84105 Beer Sheva, Israel
来源：
POWDER TECHNOLOGY | 2014年 / 268卷
基金：
以色列科学基金会;
关键词：
Single particle compression test; Yield point; Elastic contact stiffness; Effective modulus of elasticity; BREAKAGE BEHAVIOR; GRANULES;
D O I：
10.1016/j.powtec.2014.08.011
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The current work concerns determining elastic properties of particles when employing single particle uniaxial compression tests. These properties are essential for numerical computations using DEM simulations. Five different particulate materials were tested. Three crystalline materials: dead sea salt, potash and green zirconium spheres. Also, two amorphous materials: GNP and glass spheres. The yield point, elastic contact stiffness and effective modulus of elasticity were determined by characterizing the force-displacement experimental curve. Statistical analysis showed that for some materials the effective modulus of elasticity depends on particle size. Finally, a mathematical model was established that describes the distribution of the effective modulus of elasticity and its dependence on the particle size for salt. (C) 2014 Elsevier B.V. All rights reserved.
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页码：244 / 252
页数：9
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