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SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: Geomechanics From Micro To Macro, Vols I And Ii Título del capítulo: Coordination number and geometric anisotropy in binary sphere mixtures
In this paper the structure of binary mixtures of spherical particles
obtained by numerical simulations is analyzed. The study addresses
porosity, global and partial (by size particle) coordination number and
anisotropy in contacts distribution. The effect of interparticle
friction coefficient, small particle proportion and diameter ratio on
the coordination number (Nc) is evaluated. The results show that
partials coordination numbers depend mainly on geometrical aspects. The
average coordination number ((Nc) under bar) of large spheres (ls) with
small spheres (ss) increases rapidly with diameter ratio and small
particles proportion, but partial (Nc) under bar of ss with ss, ss with
ls and ls with ls present only slight changes and the global (Nc) under
bar remains constant. These results are compared with those of
experimental works. The global anisotropy in a binary mixture may be
very different of anisotropy by particle size, since the small particles
accumulate over large ones. It is shown that the friction coefficient
plays an important role in contacts distribution.
Entidades citadas de la UNAM:
Fuente:
ISBN: 9781315737324 Editorial: CRC PRESS-TAYLOR & FRANCIS GROUP
