Influence of Varying Axle Load and Tyre Pressure on Soil Stresses and Resulting Compaction

952096

09/01/1995

Event
International Off-Highway & Powerplant Congress & Exposition
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/952096
Pages
12
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.
Additional Details
Publisher
Published
Sep 1, 1995
Product Code
952096
Content Type
Technical Paper
Language
English