Influence of shear angles on tillage force using FEM with linear Drucker-Prager pattern

Rasoulzadeh, Reza and Letafati, Fardin Influence of shear angles on tillage force using FEM with linear Drucker-Prager pattern. In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

In this paper, the effect of blade shear parameters on tillage force components is investigated using elemental modeling. To investigate the interaction between tools and soil, a three-dimensional model with Abaqus Explicit was performed. The soil was modeled using the linear pattern of the Drucker-Pager model, while the tool was considered as a rigid object with a reference point at its tip. Vertical and tensile strength values that increase linearly with slope. Obtained. This paper focuses on the location of the blade to evaluate the effect of the angle of attack on the earth's force (tensile, lateral, and vertical) and the soil shearing process during and after failure. For all angles considered, the tensile force shows the highest values relative to the vertical and lateral forces. The results showed that working with small to medium angle cutting (30 to 60 and 45 degrees, respectively) can cause a reverse change in the soil.

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