Molecular Dynamics Simulation of Cohesive Granular Materials

A. Schinner and H.-G. Matuttis
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A. Schinner: Universitätsplatz 2, FNW/ITP Otto-von-Guericke University Magdeburg
H.-G. Matuttis: University of Stuttgart, ICA I

A chapter in Traffic and Granular Flow ’99, 2000, pp 505-510 from Springer

Abstract: Abstract The experimental motivation for this study are recent publications on cohesive granular materials [2–4,10]. Our central question is, in which regime and by which mechanism the the movement of grains changes from movement of independent particles to a movement of small clusters with increasing cohesion. Cohesion introduces an additional length scale, so that the effects become size-dependent. The cohesive force acting on a volume element of size I x I x I is proportional to its surface, or ∝ I2. The repulsive force generated by the mass of the volume element is ∝ I3. The strength of the cohesion and the density of the particles determine the size for which repulsion and cohesion are in equilibrium for a certain characteristic length d.

Keywords: Molecular Dynamics Simulation; Static Friction; Granular Medium; Cohesion Strength; Cohesive Force (search for similar items in EconPapers)
Date: 2000
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DOI: 10.1007/978-3-642-59751-0_56

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