2008
DOI: 10.1016/j.powtec.2008.04.001
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Effect of vibration condition and inter-particle frictions on the packing of uniform spheres

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Cited by 90 publications
(29 citation statements)
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“…[14][15][16][17][18][19][20] While compared with mostly studied compaction and sintering processes, this step is less concerned. Based on previous studies on the packing of coarse particles or fine powders, An et al have identified that by using external energy generated by mechanical vibration or compression, the transition from the so called random loose packing (RLP) to random close packing (RCP) can be reproduced numerically and physically, [21][22][23][24][25][26] where the obtained RCP structure with densest random packing density, small pore size, and uniform pore size distribution can provide the researchers with effective starting point, useful ideas, and references for high-quality PM production. However, to date, corresponding studies which considering the effects of initial packing structures on the packing densification during powder die compaction is limited.…”
Section: Introductionmentioning
confidence: 99%
“…[14][15][16][17][18][19][20] While compared with mostly studied compaction and sintering processes, this step is less concerned. Based on previous studies on the packing of coarse particles or fine powders, An et al have identified that by using external energy generated by mechanical vibration or compression, the transition from the so called random loose packing (RLP) to random close packing (RCP) can be reproduced numerically and physically, [21][22][23][24][25][26] where the obtained RCP structure with densest random packing density, small pore size, and uniform pore size distribution can provide the researchers with effective starting point, useful ideas, and references for high-quality PM production. However, to date, corresponding studies which considering the effects of initial packing structures on the packing densification during powder die compaction is limited.…”
Section: Introductionmentioning
confidence: 99%
“…The second class of methods, dynamic algorithms, consists in imitating experiments by simulating spheres submitted to forces and undergoing contacts. For example, in [17,29], spheres are falling due to gravity in a cube with periodic boundary conditions and in [1] vibrations of the bottom are added. In [29], the authors use Molecular Dynamics to simulate 20, 000 rigid spheres with partially elastic contacts while in [17] the 10, 000 spheres are supposed to be deformable.…”
Section: Introductionmentioning
confidence: 99%
“…Plots of the number fraction distributions of light particles in the vertical direction for the four types of binary mixtures (Figure 3e) confirm quantitatively that the granular beds are composed largely of random mixtures. In recent experimental 25,26 and computational studies, 27,28 it has been demonstrated that granular beds subjected to vibrations at specific amplitudes and frequencies may undergo a process referred to as densification rather than fluidization. The solid particles assemble into crystalline structures, which hinder relative motions within the granular bed.…”
Section: Resultsmentioning
confidence: 99%