The effects of tyre size on soil deformation and soil bulk density changes

Antille, D. L. and Ansorge, D. and Dresser, M. L. and Godwin, R. J. (2008) The effects of tyre size on soil deformation and soil bulk density changes. In: American Society of Agricultural and Biological Engineers Annual International Meeting (ASABE 2008), 29 Jun-2 Jul 2008, Providence, RI. United States.

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The selection of appropriate tyre size and inflation pressure for a particular load and soil condition are crucial to minimising soil compaction and ensuring soil sustainability. The purpose of this study was to investigate the changes in soil bulk density from soil deformation data, produced by a selected range of combine-harvester tyres, inflated to the recommended inflation pressures, and at high axle load (10.5 tonnes) to provide a valuable indicator for tyre selection. Results showed that the initial soil strength was the main factor influencing soil deformation and soil bulk density changes beneath the tyres. In addition, increased tyre size and low inflation pressure reduced both soil deformation and the resultant increase in soil bulk density. The increases in soil bulk density after one passage of the tyres over the soil were approximately 25% for the low bulk density soil (1.20 g cm -3 ) and between 2.3% and 5% for the high bulk density soil (1.60 g cm -3 ). The advantage of increasing tyre size and lowering inflation pressure was also reflected in the results obtained from penetrometer resistance: at the centre of the wheeling, the tyre with the highest inflation pressure (2.5 bar) gave a significantly higher increase in penetration resistance compared with the tyres with lower inflation pressures (2.2 bar and 1.9 bar). Linear relationships between drop-cone penetration and maximum rut depth were established; these data were subsequently related to those obtained from penetration resistance and initial soil bulk density; therefore, the increase in soil bulk density induced after driving a tyre over the soil can be determined for various tyre configurations and initial soil conditions.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: No
Item Status: Live Archive
Additional Information: © (2008) by the American Society of Agricultural & Biological Engineers. For information about securing permission to reprint or reproduce a technical presentation, please contact ASABE at or 269-932-7004 (2950 Niles Road, St. Joseph, MI 49085-9659 USA). Paper no. 083879.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 08 Jul 2014 05:55
Last Modified: 06 Jan 2015 04:40
Uncontrolled Keywords: soil deformation; tyre inflation pressure; soil bulk density; soil penetration resistance; drop cone penetrometer
Fields of Research : 09 Engineering > 0999 Other Engineering > 099902 Engineering Instrumentation
07 Agricultural and Veterinary Sciences > 0701 Agriculture, Land and Farm Management > 070107 Farming Systems Research
05 Environmental Sciences > 0503 Soil Sciences > 050305 Soil Physics
Socio-Economic Objective: D Environment > 96 Environment > 9614 Soils > 961402 Farmland, Arable Cropland and Permanent Cropland Soils
Identification Number or DOI: doi:10.13031/2013.25127

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