TY - JOUR
T1 - A simulation study of the effects of dynamic variables on the packing of spheres
AU - Zhang, Z. P.
AU - Liu, L. F.
AU - Yuan, Y. D.
AU - Yu, A. B.
N1 - Funding Information:
The authors are grateful to the Australian Research Council and University of New South Wales for their financial support of this work.
PY - 2001/5/3
Y1 - 2001/5/3
N2 - The packing of uniform spheres has been studied by means of Discrete Element Method with special reference to variables affecting the packing dynamics, with the results analysed in terms of packing density, radial distribution function (RDF) and coordination number. It is shown that packing density increases with dropping height and restitution coefficient, and decreases with deposition intensity and friction coefficient, which is consistent with previous experimental findings. Both RDF and coordination number distribution vary with these variables, in line with packing density. For a packing of high density, it has a clear split second peak in its RDF, like that observed for the dense random packing. However, as packing density decreases, the first component of the split second peak will gradually vanish, giving an RDF more comparable to those observed in a sequential addition simulation. Mean coordination number can be correlated with packing density; it increases with dropping height and restitution coefficient, and decreases with deposition intensity and friction coefficient.
AB - The packing of uniform spheres has been studied by means of Discrete Element Method with special reference to variables affecting the packing dynamics, with the results analysed in terms of packing density, radial distribution function (RDF) and coordination number. It is shown that packing density increases with dropping height and restitution coefficient, and decreases with deposition intensity and friction coefficient, which is consistent with previous experimental findings. Both RDF and coordination number distribution vary with these variables, in line with packing density. For a packing of high density, it has a clear split second peak in its RDF, like that observed for the dense random packing. However, as packing density decreases, the first component of the split second peak will gradually vanish, giving an RDF more comparable to those observed in a sequential addition simulation. Mean coordination number can be correlated with packing density; it increases with dropping height and restitution coefficient, and decreases with deposition intensity and friction coefficient.
KW - Coordination number
KW - Discrete particle simulation
KW - Packing
KW - Radial distribution function
UR - http://www.scopus.com/inward/record.url?scp=0035799755&partnerID=8YFLogxK
U2 - 10.1016/S0032-5910(00)00356-9
DO - 10.1016/S0032-5910(00)00356-9
M3 - Article
AN - SCOPUS:0035799755
SN - 0032-5910
VL - 116
SP - 23
EP - 32
JO - Powder Technology
JF - Powder Technology
IS - 1
ER -