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Memorias de investigación
Ponencias en congresos:
Statistical mechanics approaches to granular media: between micromechanics and macromechanics
Año:2013
Áreas de investigación
  • Física química y matemáticas,
  • Ingenieria civil
Datos
Descripción
The mechanical behavior of granular materials has been traditionally approached through two theoretical and computational frameworks: macromechanics and micromechanics. Macromechanics focuses on continuum based models. In consequence it is assumed that the matter in the granular material is homogeneous and continuously distributed over its volume so that the smallest element cut from the body possesses the same physical properties as the body. In particular, it has some equivalent mechanical properties, represented by complex and non-linear constitutive relationships. Engineering problems are usually solved using computational methods such as FEM or FDM. On the other hand, micromechanics is the analysis of heterogeneous materials on the level of their individual constituents. In granular materials, if the properties of particles are known, a micromechanical approach can lead to a predictive response of the whole heterogeneous material. Two classes of numerical techniques can be differentiated: computational micromechanics, which consists on applying continuum mechanics on each of the phases of a representative volume element and then solving numerically the equations, and atomistic methods (DEM), which consist on applying rigid body dynamics together with interaction potentials to the particles. Statistical mechanics approaches arise between micro and macromechanics. It tries to state which the expected macroscopic properties of a granular system are, by starting from a micromechanical analysis of the features of the particles and the interactions. The main objective of this paper is to introduce this approach.
Internacional
Si
Nombre congreso
Congress on Numerical Methods in Engineering. Spanish Society of Numerical Methods in Engineering and Portuguese Association of Theoretical, Applied and Computational Mechanics
Tipo de participación
960
Lugar del congreso
Bilbao
Revisores
Si
ISBN o ISSN
CDP08UPM
DOI
Fecha inicio congreso
25/06/2013
Fecha fin congreso
28/06/2013
Desde la página
0
Hasta la página
0
Título de las actas
Congress on Numerical Methods in Engineering 2013 Bilbao, 25-28 June, 2013 © SEMNI, Spain, 2013
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Ignacio Gonzalez Tejada (UPM)
  • Autor: Rafael Jimenez Rodriguez (UPM)
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  • Creador: Grupo de Investigación: Mecánica de Rocas
  • Departamento: Ingeniería y Morfología del Terreno
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