Packing Structure of Granular Materials and Entropy
نویسندگان
چکیده
منابع مشابه
Packing of compressible granular materials
3D computer simulations and experiments are employed to study random packings of compressible spherical grains under external confining stress. In the rigid ball limit, we find a continuous transition in which the stress vanishes as (straight phi-straight phi(c))(beta), where straight phi is the (solid phase) volume density. The value of straight phi(c) depends on whether the grains interact vi...
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We investigate the two-dimensional packing of extremely prolate (aspect ratio alpha=L/D>10) granular materials, comparing experiments with Monte Carlo simulations. The average packing fraction of particles with aspect ratio alpha=12 is 0.68+/-0.03. We quantify the orientational correlation of particles and find a correlation length of two particle lengths. The functional form of the orientation...
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In two-dimensional rotating drum experiments, we find two separate influences of the packing fraction of a granular heap on its stability. For a fixed grain shape, the stability increases with packing fraction. However, in determining the relative stability of different grain shapes, those with the lowest average packing fractions tend to form the most stable heaps. We also show that only the c...
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We study the distribution of volume fluctuations in experiments and numerical simulations concerning equal-sized sphere packings prepared with different techniques. We show that the distribution of the local volumes (Voronoï cells) and also the distributions of the global volumes (whole samples) follow remarkably well a shifted and rescaled Gamma distribution that we name a k-Gamma distribution...
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Azeddine Benabbou, Houman Borouchaki, Patrick Laug, and Jian Lu 1 INRIA, BP 105, 75153 Le Chesnay cedex, France [email protected] 2 University of Technology of Troyes, 12 rue Marie Curie BP2060, 10010 Troyes Cedex, France [email protected] 3 INRIA, BP 105, 75153 Le Chesnay cedex, France [email protected] 4 Hong Kong Polytechnic University, Kowloon, Hong Kong [email protected]...
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ژورنال
عنوان ژورنال: Journal of the Society of Powder Technology, Japan
سال: 1981
ISSN: 0386-6157,1883-7239
DOI: 10.4164/sptj.18.823