Resumo

DE LA ROSA ANDINO, Alain Ariel et al. Adjustment of the plastic parameters of the Extended Drucker Prager model for the simulation of the mechanical response of a clayey soil (Vertisol). Rev Cie Téc Agr [online]. 2016, vol.25, n.3, pp. 04-12. ISSN 2071-0054.  http://dx.doi.org/10.13140/RG.2.2.26734.61764.

This research work was carried out with the aim of adjusting the constitutive parameters of the Extended Drucker-Prager (EDP) model which defines the phase of plastic deformation of soil in the simulation of the mechanical response of clayey soil (Vertisol). The stress-strain curve is divided into two parts and two equations describing its path were obtained. Initial data were consistent with the experimentally determined data. Starting from these results, the approximate values of both the internal friction angle of the fault plane of the Extended Drucker-Prager model, as well as the angle of dilatancy were searched out. Finally the optimum values of these angles were estimated, reducing errors in the predictions of the EDP model below 4.35% and turning this model adequate for simulating the mechanical response of the soil object of investigation

Palavras-chave : constitutive model; plastic deformation; adjustment of curves.

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