Granular Materials at Meso-scale
Towards a Change of Scale Approach
By Bernard Cambou, Hélène Magoariec, Ngoc-Son Nguyen
Publisher: Elsevier / ISTE Press - Elsevier
Final Release Date: August 2016
Pages: 196

Granular Materials at Meso-scale: Towards a Change of Scale Approach proposes a new way for developing an efficient change of scale—considering a meso-scale defined at the level of local arrays of particles. The change of scale is known to be a very interesting way to improve the modelling of mechanical behavior granular materials. In the past, studies have been proposed using a micro-scale at the grain level to perform change of scale, but limitations have been proven for these approaches.

Definition and analysis of the phases are detailed, constituted by sets of meso-domains sharing the same texture characteristics. The authors propose a local constitutive model for the phases, allowing the constitutive model of the representative elementary volume to be definied from a change-of-scale approach and, finally, presenting the validation of obtained modeling on cyclic loadings.

  • Proposes a new way for developing an efficient change of scale—considering a meso-scale
  • Explores local meso-domains and texture characteristics
  • Defines meso-strain and stress
  • Analyzes the evolution of these variables and texture characteristics in relation to the applied loading
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