Change of scale in granular materials |
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Authors: | Bernard Cambou Marie Chaze Fabian Dedecker |
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Institution: | Laboratoire de Tribologie et Dynamique des Systèmes, UMR 5513, Ecole Centrale de Lyon, 36 Avenue Guy de Collongue, 69130 Ecully, France |
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Abstract: | This paper analyzes relationships allowing global variables to be deduced from local ones in granular materials. This change of scale is now clear for static variables but rather confusing for kinematic variables. This paper compares the various established formulations for kinematic variables and also proposes original formulations. By running numerical simulations all the formulations in question are compared and the basic premises to define the change of scale for kinematic variables in granular media put forward. |
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Keywords: | granular materials strain change of scale |
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