Open AccessAnalytical determination of the rational angle of lifting: the soil cooking organ
Author(s) -
Vladimir V. Vasilenko,
Sergey V. Vasilenko
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/341/1/012122
Subject(s) - tillage , water content , wedge (geometry) , geotechnical engineering , angle of repose , soil water , materials science , environmental science , soil science , geology , mathematics , geometry , ecology , biology
The aim of the study is to search for the analytical dependence of the force of resistance of the wedge on the lifting angle in the case of working with wet soil, which does not crumble into fragments, but slides along the wedge in the form of a continuous tape. Tillage tools can have front and rear sharpening angles. The front angle raises the soil layer, and this action is most common in tillage. The rear corner seals the bottom of the furrow, so it is undesirable in plows. To determine the rational angle of inclination of the entire working surface under working conditions with wet soil, an analytical equation has been obtained, which is applicable if the technological indicators of the soil are observed in a particular field, especially indicators of soil sticking to the working surfaces. In this equation, the traction resistance of the wedge depends on the density of the soil, friction coefficient, tensile strength and shear strength. In the calculations, the deformation of the soil layer was taken inherent in the wetted state with the presence of plant residues, that is, the soil retains the shape of a continuous ribbon in its movement along the working surface of the wedge. According to the results of field studies of the experimental and basic plows, it was determined that on loamy soil with a moisture content of 16 to 22%, an rational angle of elevation of the tillage tool can be taken as an angle of 18 °. An experimental plow with a plowshare angle of 18 ° compared to a basic plow with a lifting angle of 30 ° showed an increase in productivity by 19% and a reduction in specific fuel consumption by 17% due to a decrease in traction resistance and, as a result, by reducing the likelihood of sticking of the soil and rare stops for cleaning the working bodies.