文章基本信息

标题：Attractive particle interaction forces and packing density of fine glass powders
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作者：Eric J. R. Parteli ; Jochen Schmidt ; Christina Blümel 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2014
卷号：4
DOI：10.1038/srep06227
出版社：Springer Nature
摘要：We study the packing of fine glass powders of mean particle diameter in the range (4–52) μ m both experimentally and by numerical DEM simulations. We obtain quantitative agreement between the experimental and numerical results, if both types of attractive forces of particle interaction, adhesion and non-bonded van der Waals forces are taken into account. Our results suggest that considering only viscoelastic and adhesive forces in DEM simulations may lead to incorrect numerical predictions of the behavior of fine powders. Based on the results from simulations and experiments, we propose a mathematical expression to estimate the packing fraction of fine polydisperse powders as a function of the average particle size.