Cranfield University
Cranfield University
Cranfield University
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Further Requirements and Practical Suggestions<br />
9 FURTHER REQUIREMENTS AND PRACTICAL SUGGESTIONS<br />
� An investigation of vertical and horizontal soil displacement characteristic under<br />
the application of higher track and tyre slippage.<br />
� Future work would need to show whether there is a difference on total soil dis-<br />
placement due to lug height; ideally with a lugged and an unlugged tyre.<br />
� Linking pressure transition throughout the soil to soil displacement.<br />
� Improving the prediction of contact pressure particularly for under and overinflated<br />
tyres as existing predictions proofed to be unsatisfactory in this range.<br />
� Agronomical study enlightening the monetary benefit from tracked vs. wheeled<br />
machinery and ideally comparing tracked vs. wheeled mechanization schemes.<br />
� A different attachment system for the tracks might be useful in order to evenly bal-<br />
ance the tracks under traction, thereby improving their performance in context with<br />
soil compaction.<br />
� The influence of VCL parameters on the predicted shape of the soil displacement<br />
curve would be interesting as from the in-situ track VCL it appears as if the curva-<br />
ture is slightly different than after tyres.<br />
� The VCL, however obtained, obviously depends on the stress configuration of mi-<br />
nor and major principal stresses. Therefore it would be beneficial to set up a more<br />
general relationship between those properties.<br />
� If it was possible to link drop cone data (Godwin et al., 1991) to small scale plate<br />
sinkage data deriving an in-situ VCL, a second field - possible method for deriving<br />
in-situ VCL parameters was available besides full size machinery.<br />
� A further improvement of track design with respect to belt width and tension and<br />
roller distribution would be beneficial. Smoothening pressure peaks while simulta-<br />
neously maintaining the insensitivity of the system against dirt would be beneficial.<br />
� Confirming the findings of the LPPL with TexScan due to a better defined contact<br />
area and measuring displacement simultaneously with pressure would allow more<br />
detailed information about tracks.<br />
� An investigation into the effect of concentration factor onto pressure transition<br />
throughout soils at different densities to confirm/validate/evaluate the findings of<br />
this study and Etienne and Steinemann.<br />
Ph.D. Thesis Dirk Ansorge (2007)<br />
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