Experimental study on the packing of uniform spheres under three-dimensional vibration
Experimental study on the packing of uniform spheres under three-dimensional vibration
复制标题
三维振动下均匀球体堆积的实验研究
DOI：
10.1016/j.powtec.2010.12.029
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发表时间：
2011-04-10
影响因子：
5.2
通讯作者：
Yu, A. B.
中科院分区：
文献类型：
--
作者：
Li, C. X.;An, X. Z.;Yu, A. B.
对三维振动作用下单尺寸球体填料的致密化进行了实验研究。系统地研究了振动幅值、频率和进料方式等操作条件对填料密度的影响。结果表明，适当控制振动幅值和频率可以实现致密填料。加料方式在致密化过程中起着重要作用。当每批喂入的颗粒数少于一层时，可以获得较高的填充密度。充填密度随每批进料颗粒数的增加而减小，但当每批颗粒数大于三层时，充填密度保持不变。通过对不同尺寸容器的填料密度进行外推，在本实验条件下，总进料法的最大填料密度为0.69，分批进料法的最大填料密度为0.74。从粒子层间扩散的角度讨论了有序结构的形成。(C) 2011 Elsevier B.V.版权所有
Densification of mono-sized sphere packings under three-dimensional (3D) vibration is experimentally studied. The effects of an operational condition, such as vibration amplitude and frequency and feeding method, on packing density are systematically investigated. The results indicate that the dense packings can be achieved by proper control of both vibration amplitude and frequency. The feeding method plays an important role in densification. Higher packing densities can be obtained when the number of particles fed per batch is less than one layer. Packing density decreases with increasing number of particles fed per batch, but keeps constant when the number of particles per batch is larger than three layers. Through the extrapolation on packing density obtained from different sized containers, the maximum packing density is 0.69 for the total feeding method and 0.74 for the batch-wise feeding under the present experimental condition. The formation of ordered structure is discussed based on the particle interlayer diffusion. (C) 2011 Elsevier B.V. All rights reserved.