Abstract
<jats:p>ABSTRACT: This paper presents a methodology for 3D modeling of the furrow formation process using an active-driven rotary working tool intended for shallow soil tillage. The relevance of the study is обусловлена the need to improve design methods for rotary tillage machines and to increase the accuracy of evaluating furrow geometric parameters, which determine the quality of soil cultivation, the energy efficiency of the technological process, and the effectiveness of the interaction between the working tool and the soil medium. The aim of the study is to develop a 3D modeling methodology for the furrow formation process in order to accurately determine the geometric parameters of the furrow formed by the blade element of an active-driven rotary working tool. The research methodology is based on a combination of grapho-analytical analysis of the blade element kinematics and three-dimensional modeling in «КОМПАС-3D». At the first stage, the trajectories of the characteristic points of the blade element were determined considering the structural parameters of the working tool, tillage depth, forward speed of the unit, and kinematic operating conditions. In addition, the relative positions of the trajectories of the extreme points of the blade element were analyzed, which made it possible to more accurately determine the boundaries of the furrow formation zone.Based on the obtained calculation data, spatial modeling of the blade element motion during one revolution of the rotary working tool was performed, followed by the identification of the zone of its direct interaction with the soil. For this purpose, a horizontal cutting plane corresponding to the specified tillage depth was introduced into the three-dimensional model, after which the fragments located outside the soil layer were removed. This made it possible to obtain a spatial model of the furrow and determine its main geometric parameters, including length, surface area, and volume. During the study, the influence of the blade inclination angle in the range of γ = −45° to +45° and the kinematic coefficient λ = 0.8–1.4 on the furrow parameters was investigated. It was established that the blade inclination angle has a decisive influence on the furrow shape, surface area, and volume, while an increase in the kinematic coefficient leads to a reduction in furrow length and a decrease in its volumetric characteristics. The obtained results can be used in the design and optimization of rotary tillage machines.</jats:p>