Computer Simulation Of Random Sphere Packing In An Arbitrarily Shaped Container

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	Computer Simulation Of Random Sphere Packing In An Arbitrarily Shaped Container
	Li SX; Zhao L; Liu YW(刘曰武)
刊名	Cmc-Computers Materials & Continua
	2008
通讯作者邮箱	lsx@pku.edu.cn
页码	109-118
关键词	Sphere Packing Random Packing Computer Simulation Relaxation Algorithm Containers Numerical-Simulation Hard-Spheres Particles Generation Binary Impact Mesh
ISSN号	1546-2218
通讯作者	Li, SX (reprint author), Peking Univ, State Key Lab Turbulence & Complex Syst Study, Coll Engn, Beijing 100871, Peoples R China.
合作状况	国内
中文摘要	Most simulations of random sphere packing concern a cubic or cylindric container with periodic boundary, containers of other shapes are rarely studied. In this paper, a new relaxation algorithm with pre-expanding procedure for random sphere packing in an arbitrarily shaped container is presented. Boundaries of the container are simulated by overlapping spheres which covers the boundary surface of the container. We find 0.4 similar to 0.6 of the overlap rate is a proper value for boundary spheres. The algorithm begins with a random distribution of small internal spheres. Then the expansion and relaxation procedures are performed alternately to increase the packing density. The pre-expanding procedure stops when the packing density of internal spheres reaches a preset value. Following the pre-expanding procedure, the relaxation and shrinking iterations are carried out alternately to reduce the overlaps of internal spheres. The pre-expanding procedure avoids the overflow problem and gives a uniform distribution of initial spheres. Efficiency of the algorithm is increased with the cubic cell background system and double link data structure. Examples show the packing results agree well with both computational and experimental results. Packing density about 0.63 is obtained by the algorithm for random sphere packing in containers of various shapes.
类目[WOS]	Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Mathematics, Interdisciplinary Applications
研究领域[WOS]	Engineering ; Materials Science ; Mathematics
关键词[WOS]	NUMERICAL-SIMULATION ; HARD-SPHERES ; PARTICLES ; GENERATION ; BINARY ; IMPACT ; MESH
收录类别	SCI ; EI
原文出处	http://www.techscience.com/doi/10.3970/cmc.2008.007.109.html
语种	英语
WOS记录号	WOS:000256769800004
公开日期	2009-08-03 ; 2009-09-14
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/25998]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Li SX,Zhao L,Liu YW. Computer Simulation Of Random Sphere Packing In An Arbitrarily Shaped Container[J]. Cmc-Computers Materials & Continua,2008:109-118.
APA	Li SX,Zhao L,&Liu YW.(2008).Computer Simulation Of Random Sphere Packing In An Arbitrarily Shaped Container.Cmc-Computers Materials & Continua,109-118.
MLA	Li SX,et al."Computer Simulation Of Random Sphere Packing In An Arbitrarily Shaped Container".Cmc-Computers Materials & Continua (2008):109-118.