Characterizing the Influence of the Evolution of Length scale on the Strain Localization in Cosserat Media

摘要

In this paper, on the basis of micropolar (Cosserat) continua approach, a constitutive model for simulation of granular material (e.g. sand) response in the elastoplastic range has been presented. Numerical analyses on strain localization in this type material are carried out in the last part of this paper. The influence of the evolution of the internal length scale micropolar parameters on the formation of strain localization is investigated.