<abstract xmlns="http://www.w3.org/1999/xhtml">The objective of the paper was to determine the impact of the shearing speed and cultivator tines flexibility on the vertical forces value. The study was carried out in field conditions in sandy clay soil and the average moisture of 11.2%. The vertical forces acting on four “s” tines with flexibility of 0.0061; 0.0711; 0.0953 and 0.1406 m∙kN−1 were measured. Tines were ended with a cultivator point with the curvature radius of 0.17 m. Measurements were made for four shearing speeds (1.0; 1.7; 2.4 and 3.0 m·s−1) and the shearing depth of 11 cm. A stand for measurement of forces acting on soil shearing farm tools in field conditions was used. It was concluded that the shearing speed caused a linear increase of the vertical force but the growth gradient does not depend on the tines flexibility. It was also concluded that the increase in flexibility causes an initial increase and then decrease of the vertical force, which was described with the second degree parabola equation. Flexibilities, at which extremes of courses occur, grow along with the reduction of the shearing speed.</abstract>

The objective of the paper was to determine the impact of the shearing speed and cultivator tines flexibility on the vertical forces value. The study was carried out in field conditions in sandy clay soil and the average moisture of 11.2%. The vertical forces acting on four “s” tines with flexibility of 0.0061; 0.0711; 0.0953 and 0.1406 m∙kN−1 were measured. Tines were ended with a cultivator point with the curvature radius of 0.17 m. Measurements were made for four shearing speeds (1.0; 1.7; 2.4 and 3.0 m·s−1) and the shearing depth of 11 cm. A stand for measurement of forces acting on soil shearing farm tools in field conditions was used. It was concluded that the shearing speed caused a linear increase of the vertical force but the growth gradient does not depend on the tines flexibility. It was also concluded that the increase in flexibility causes an initial increase and then decrease of the vertical force, which was described with the second degree parabola equation. Flexibilities, at which extremes of courses occur, grow along with the reduction of the shearing speed.

Vertical Forces Acting on Cultivator Tines in the Aspect of Shearing Speed and Flexibility of Tines

Wroclaw University of Environmental and Life Sciences

Institute of Soil Science and Cultivation − in Puławy

Agricultural Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The objective of the paper was to determine the impact of the shearing speed and cultivator tines flexibility on the vertical forces value. The study was...

Vertical Forces Acting on Cultivator Tines in the Aspect of Shearing Speed and Flexibility of Tines

Published Online: Jul 20, 2018

Page range: 39 - 48

Received: Apr 01, 2018

Accepted: Jun 01, 2018

DOI: https://doi.org/10.1515/agriceng-2018-0014

Keywords
soil, cultivator, flexible tine, vertical forces, shearing speed

© 2018 Krzysztof Lejman et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Vertical Forces Acting on Cultivator Tines in the Aspect of Shearing Speed and Flexibility of Tines

Published Online: Jul 20, 2018

Page range: 39 - 48

Received: Apr 01, 2018

Accepted: Jun 01, 2018

DOI: https://doi.org/10.1515/agriceng-2018-0014

Keywordssoil, cultivator, flexible tine, vertical forces, shearing speed

© 2018 Krzysztof Lejman et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
soil, cultivator, flexible tine, vertical forces, shearing speed