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Memorias de investigación
Ponencias en congresos:
Statistical distributions obtained from the compression of monodisperse, soft and frictionless particles
Año:2013
Áreas de investigación
  • Física química y matemáticas,
  • Ingenieria civil
Datos
Descripción
The cyclic compression of several granular systems has been simulated with a molecular dynamics code. All the samples consisted of bidimensional, soft, frictionless and equal-sized particles that were initially arranged according to a squared lattice and were compressed by randomly generated irregular walls. The compression protocols can be described by some control variables (volume or external force acting on the walls) and by some dimensionless factors, that relate stiffness, density, diameter, damping ratio and water surface tension to the external forces, displacements and periods. Each protocol, that is associated to a dynamic process, results in an arrangement with its own macroscopic features: volume (or packing ratio), coordination number, and stress; and the differences between packings can be highly significant. The statistical distribution of the force-moment state of the particles (i.e. the equivalent average stress multiplied by the volume) is analyzed. In spite of the lack of a theoretical framework based on statistical mechanics specific for these protocols, it is shown how the obtained distributions of mean and relative deviatoric force-moment are. Then it is discussed on the nature of these distributions and on their relation to specific protocols.
Internacional
Si
Nombre congreso
III International Conference on Particle-Based Methods. European Community in Computational Methods in Applied Sciences [Proceedings en http://congress.cimne.com/particles2013/proceedings/]
Tipo de participación
960
Lugar del congreso
Stuttgart
Revisores
Si
ISBN o ISSN
978-84-941531-8-1
DOI
Fecha inicio congreso
18/09/2013
Fecha fin congreso
20/09/2013
Desde la página
0
Hasta la página
0
Título de las actas
Particles 2013 III International Conference on Particle-Based Methods Fundamentals and Applications 18-20 September 2013, Stuttgart, Germany
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Ignacio Gonzalez Tejada (UPM)
  • Autor: Rafael Jimenez Rodriguez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Mecánica de Rocas
  • Departamento: Ingeniería y Morfología del Terreno
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