Influence of Varying Axle Load and Tyre Pressure on Soil Stresses and Resulting Compaction 952096
In a series of field experiments we measured the stresses in sand beneath single front and dual rear tyres of a John Deere 8300 tractor, using earth stress cells installed beneath the tyres. The stress in the sand increased both with increasing tyre inflation pressure (constant axle load) and with increasing axle load (constant tyre pressure).
Analysis of the experiments using a finite element model showed that the stresses in the top 60 - 70 cm of soil depended mainly on the tyre / soil contact pressure; the influence of the lugs was particularly important. Stresses deeper than that depended mainly on the total load applied to the surface, increasing with increasing axle load.
The model was used to simulate compaction in clay soils. Compaction predicted beneath the tyres depended on the strength of the soil, which in turn depends on the moisture content. However, tyre / soil contact pressure and axle load were still important.
Citation: Kirby, M., Mockler, S., and Zoz, F., "Influence of Varying Axle Load and Tyre Pressure on Soil Stresses and Resulting Compaction," SAE Technical Paper 952096, 1995, https://doi.org/10.4271/952096. Download Citation
Author(s):
Mac Kirby, Simon Mockler, Frank Zoz
Affiliated:
CSIRO Australia
Pages: 12
Event:
International Off-Highway & Powerplant Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Belt and Tire Traction in Agricultural Vehicles-SP-1291, SAE 1995 Transactions: Journal of Commercial Vehicles-V104-2
Related Topics:
Pressure
Soils
Axles
Powder metallurgy
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