The variations of soil mechanical properties, cohesion, c, internal friction angle, (phi), soil-rubber adhesion, c(,r)', soil-steel adhesion, c(,s)', soil-steel friction angle, (delta)(,s), soil-rubber friction angle, (delta)(,r), the sinkage moduli, kc, k(phi), and n, have been studied under field conditions for different soil depths of sandy loam and clay soils. Models to predict these parameters were developed in this study. These models were functions of soil moisture content, soil plastic limit or liquid limit and two constants which depend on the soil type and depth. Also, a model to estimate the soil moisture content by a simple and accurate method was developed using the data of daily precipitation and evaporation pan reading (class A) in southern Quebec. The soil mechanical properties models were used to study the traction characteristics of lugged tires. The investigation shows that lug design could have a significant role in improving the traction force for agricultural tires. The optimal lug angle was found for different soil types during the farming season in an average climatic year of southern Quebec.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.68530 |
| Date | January 1980 |
| Creators | Ali Hassan, Omar Soliman. |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Agricultural Engineering) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 000112493, proquestno: AAINK51842, Theses scanned by UMI/ProQuest. |
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