Discrete element modeling of vibrating tillage tools
Abstract
Purpose
The analysis of the effect of tool vibrations on the measured and simulated draught forces of cultivator tools. This paper aims to discuss this issue.
Design/methodology/approach
Soil bin measurements and discrete element method (DEM)-based simulations.
Findings
The soil-tool interaction induced free vibrations of cultivator tools have significant impact on the measured draught force, and the simulations made by using vibrating tools give similar results.
Research limitations/implications
Accurate calibration of discrete element model parameters can be done based on the reproduction of the whole Mohr-Coulomb failure line. Draught force ratio – velocity ratio values seem to be independent of tool geometry and soil conditions in case of velocity ratio higher than 2.
Practical implications
DEM-based numerical simulations can be used for modeling the effect of tool vibration on the draught force values. During discrete element simulations of soil-tool interaction, the effect of tool vibration may not be neglected.
Originality/value
The paper demonstrates that during the discrete element modelling of the soil-tool interaction, the tool vibration phenomenon should not be neglected.
Keywords
Acknowledgements
Financial support from the Bolyai Scholarship of the Hungarian Academy of Sciences and TAMOP-4.2.1.B-11/2/KMR-2011-0003 is gratefully acknowledged by Istvan Keppler PhD and Istvan Oldal PhD.
Citation
Keppler, I., Hudoba, Z., Oldal, I., Csatar, A. and Fenyvesi, L. (2015), "Discrete element modeling of vibrating tillage tools", Engineering Computations, Vol. 32 No. 2, pp. 308-328. https://doi.org/10.1108/EC-10-2013-0257
Publisher
:Emerald Group Publishing Limited
Copyright © 2015, Emerald Group Publishing Limited