On the packing and crushing of granular materials
On the packing and crushing of granular materials
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关于颗粒状物料的包装和破碎
DOI：
10.1016/j.ijsolstr.2018.07.011
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发表时间：
2020
影响因子：
3.6
通讯作者：
De Bono J
中科院分区：
文献类型：
--
作者：
De Bono J
本文研究了颗粒材料中空隙体积与颗粒尺寸分布的关系。先前已经提出，空隙的体积与最小颗粒的体积成比例。在逐渐变宽的颗粒尺寸分布中（例如，由于在砂的压缩期间的破碎而发生），颗粒的最小尺寸减小，然而在数千或数百万个颗粒中仅存在这些颗粒中的少数。本文试图确定哪些颗粒决定了颗粒材料的整体密度，并提出了“最小颗粒”的新定义。这些颗粒被示出在球形和非球形可压碎颗粒的模拟范围内支配空隙空间。该理论也适用于理想化的阿波罗球填充。
This paper is a study of the dependence of the volume of voids in a granular material on the particle size distribution. It has previously been proposed that the volume of voids is proportional to the volume of the smallest particles. In a particle size distribution which is progressively becoming wider (e.g. as occurs due to crushing during the compression of sand), the smallest size of particle decreases, yet there are only ever a few of these particles out of many thousands or millions. This paper attempts to identify which particles govern the overall density of a granular material, and a new definition of the ‘smallest particles’ is proposed. These particles are shown to govern the void space in a range of simulations of spherical and non-spherical crushable particles. The theory also applies to idealised Apollonian sphere packings.