RESEARCH PAPER
Evaluation of the changes in Bekker's parameters and their use in determining
the rolling resistance
1
Department of Biosystems Engineering, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil 56199-11367, Iran
2
Department of Agricultural, Forest and Transport Machinery, University of Life Sciences in Lublin, Głęboka 28, 20-612 Lublin, Poland
These authors had equal contribution to this work
Final revision date: 2024-03-08
Acceptance date: 2024-04-10
Publication date: 2024-06-03
Corresponding author
Gholamhossein Shahgholi
Department of Biosystems Engineering, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil 56199-11367, Iran
Department of Biosystems Engineering, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil 56199-11367, Iran
Mariusz Szymanek
Department of Agricultural, Forest and Transport Machinery, University of Life Sciences in Lublin, Głęboka 28, 20-612, Lublin, Poland
Department of Agricultural, Forest and Transport Machinery, University of Life Sciences in Lublin, Głęboka 28, 20-612, Lublin, Poland
Int. Agrophys. 2024, 38(3): 257-266
HIGHLIGHTS
- Soil moisture influences rolling resistance
- With loading speed increment there is less time for soil loading
- With the soil moisture increase the soil sinkage increased under similar pressure
KEYWORDS
TOPICS
ABSTRACT
In order to determine the relationships between the soil stiffness constants of cohesive modulus of deformation, friction modulus of deformation and soil constant value and the rolling resistance, a series of tests was conducted using two types of loam and clay loam soil textures at four moisture contents of 10, 20, 30 and 40% and five loading speeds of 1, 2, 3, 4 and 5 mm s–1. The results showed that all of the independent factors had a significant effect on the soil stiffness constants, so with increases in moisture content and loading speed, the soil stiffness constants of cohesive modulus of deformation, friction modulus of deformation and soil constant value varied significantly. The highest cohesive modulus of deformation and friction modulus of deformation values were obtained at a moisture content of 10% and loading speed of 5 mm s–1 in a clay loam soil. All parameters were significant in calculating the rolling resistance using Bekkers’ relationship. With increases in soil moisture content, the rolling resistance increased, while increasing the loading speed reduced the rolling resistance significantly. In general, the highest rolling resistance value of 16 887.1 N was obtained at a moisture content value of 40% and a loading speed of 1 mm s–1 in loam soil.
CONFLICT OF INTEREST
The authors declare no conflict of interest
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