Compaction of bidisperse cohesive powders

被引：14
作者：
Morgeneyer, Martin [1 ]
Brendel, Lothar [2 ]
Schwedes, Joerg [1 ]
机构：
[1] TU Braunschweig, Inst Partikeltech, D-38104 Braunschweig, Germany
[2] Univ Duisburg Essen, Dept Theoret Phys, D-47048 Duisburg, Germany
来源：
GRANULAR MATTER | 2008年 / 10卷 / 04期
关键词：
bidisperse cohesive powders; compaction; porosity; experiments; contact dynamics simulation;
D O I：
10.1007/s10035-008-0090-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The relationship between an external stress applied to a bulk and its resulting porosity-i.e. its compaction behavior-is studied in this work, varying the median particle diameter by using different batches of carbonyl iron powder (CIP) as well as by mixing them. Firstly, compaction equations of other authors and an algebraic relation suggested by us are presented. Secondly, these descriptions are compared to data obtained by compacting CIP. Last, for powder mixtures, the role of the particles' median and mean diameters is studied in experiments and DEM-simulations, respectively. We show that they take on the role of the relevant length scale appearing in the algebraic compaction law.
引用
收藏
页码：295 / 299
页数：5
相关论文
共 23 条
  • [1] BRENDEL L, 2003, AIDIC C SER, V6, P55
  • [2] BRENDEL L, CONSTRAINT FRO UNPUB
  • [3] BRENDEL L, 2004, CONTACT DYNAMICS BEG, P325
  • [4] NATURAL COMPRESSION LAW FOR SOILS (AN ADVANCE ON E-LOG P')
    BUTTERFIELD, R
    [J]. GEOTECHNIQUE, 1979, 29 (04): : 469 - 480
  • [5] Compaction equations: a comparison of the Heckel and Kawakita equations
    Denny, PJ
    [J]. POWDER TECHNOLOGY, 2002, 127 (02) : 162 - 172
  • [6] Compressibility and flow properties of a cohesive limestone powder in a medium pressure range
    Grossmann, L
    Tomas, J
    Csoke, B
    [J]. GRANULAR MATTER, 2004, 6 (2-3) : 103 - 109
  • [7] Diffusion as a mixing mechanism in granular materials
    Henrique, C.
    Batrouni, G.
    Bideau, D.
    [J]. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2001, 63 (1 I): : 011304 - 011301
  • [8] TRACER DISPERSION IN SINTERED GLASS-BEADS WITH A BIDISPERSE SIZE DISTRIBUTION
    HULIN, JP
    CHARLAIX, E
    PLONA, TJ
    OGER, L
    GUYON, E
    [J]. AICHE JOURNAL, 1988, 34 (04) : 610 - 616
  • [9] KADAU D, 2004, THESIS U DUISBURG ES
  • [10] Kadau D., 2003, CHEM ENG T, V3, P979
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