Three dimensional steady-state locus for dry monodisperse granular materials: DEM numerical results and theoretical modelling |
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| Authors: | Irene Redaelli Claudio di Prisco |
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| Institution: | Department of Civil and Environmental Engineering (DICA), Politecnico di Milano, Milan, Italy |
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| Abstract: | In this paper, steady-state conditions for ideal monodisperse dry granular materials are both theoretically and numerically analysed. A series of discrete element (DEM) numerical simulations have been performed on a periodic cell by imposing stress paths characterized by different Lode angles, pressures, and deviatoric strain rates. The dependence of the material response on both inertial number and loading path has been discussed in terms of void ratio, fabric, and granular temperature. DEM numerical results have been finally compared with the prediction of an already conceived model based on both kinetic and critical state theories, here suitably modified to account for three-dimensional conditions. |
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| Keywords: | critical state theory DEM kinetic theory of granular gases steady-state locus true triaxial |
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