Three Comments on "A Simple Incremental Modelling of Granular-Media Mechanics"


P. Evesque: Lab MSSM, UMR 8579 CNRS, Ecole Centrale Paris, 92295 Châtenay-Malabry, France,


Abstract: Using the recent incremental modelling, it is shown that the trajectory of a sample in the phase space of soil mechanics in the vicinity of the critical state is not governed by the rigidity matrix, but by its variations. The characteristics are used to predict that Young modulus tends to 0 as s1/s2-M-1 near the critical point. An attempt to understand and predict unstable behaviours is done using the same modelling. Compatibility of this modelling with results on soil liquefaction is emphasised.


poudres & grains 10, 1-5 ( décembre 1999)