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Micromechanical Modelling of Granular Materials Through Fabric and Coordination Number Anisotropies
Granular geomaterials involve microphysics at the various scales that give rise to distinct constitutive characteristics such as steady states, plastic limit states and unstable material behaviour. This paper is concerned with the statistics of coordination number and fabric anisotropy at the local level to impart microstructural information to the macroscopic description of the state of the material. As such the evolutions of coordination number (connectivity) distribution and anisotropy (contact normal) distribution curves with deformation history and their correlations are determined through DEM (Discrete Element Modelling). These results are useful as they enter as joint probability distribution functions into homogenization expressions during upscaling to a continuum constitutive model enriched with microstructural information.
Micromechanical Modelling of Granular Materials Through Fabric and Coordination Number Anisotropies
Granular geomaterials involve microphysics at the various scales that give rise to distinct constitutive characteristics such as steady states, plastic limit states and unstable material behaviour. This paper is concerned with the statistics of coordination number and fabric anisotropy at the local level to impart microstructural information to the macroscopic description of the state of the material. As such the evolutions of coordination number (connectivity) distribution and anisotropy (contact normal) distribution curves with deformation history and their correlations are determined through DEM (Discrete Element Modelling). These results are useful as they enter as joint probability distribution functions into homogenization expressions during upscaling to a continuum constitutive model enriched with microstructural information.
Micromechanical Modelling of Granular Materials Through Fabric and Coordination Number Anisotropies
Springer Ser.Geomech.,Geoengineer.
Chau, Kam-Tim (editor) / Zhao, Jidong (editor) / Pouragha, Mehdi (author) / Wan, Richard (author)
International Workshop on Bifurcation and Degradation in Geomaterials ; 2014 ; Hong Kong, Hong Kong
Bifurcation and Degradation of Geomaterials in the New Millennium ; Chapter: 52 ; 361-367
2014-12-30
7 pages
Article/Chapter (Book)
Electronic Resource
English
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