Resumen

DE LA ROSA-ANDINO, Alain Ariel et al. Constitutive Models Used in Modeling Mechanical Response of Agricultural Soils. Rev Cie Téc Agr [online]. 2019, vol.28, n.3, e10.  Epub 29-Abr-2019. ISSN 2071-0054.

Given the importance of knowing the mechanical response of the soil as one of the variables to be taken into account in the design of implements and machines capable of preserving the physical qualities of the soil, several constitutive models have been developed that represent the soil as a non-linear material elastic or elastoplastic. The objective of this paper was to analyze the current state of the constitutive models used in the modeling of agricultural soils in order to define which of them is the most adequate to simulate the mechanical response of agricultural soils with clay texture (Oxisol, Inceptisol and Vertisol). Constitutive models that are used in the simulation of the mechanical response of agricultural soils by means of the finite element method are analyzed critically, taking into account the properties and parameters of input, determination of these and their implementation in the softwares for simulation using the finite element method. Finally, it is concluded that the Drucker Prager Extended model as the most adequate to simulate the mechanical response of an Oxisol, prioritizing in this decision its simplicity, convenience when determining its parameters, accuracy in estimating the stress-strain relationship of the soil , and inclusion in most commercial software.

Palabras clave : simulation; mechanical answer; finite elements.

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