CONSIDERATOIN OF ECASTO-PLASTIC MODEL FOR THE COMPOSITE SOIL

The soil of fields should be regarded as a composite material for composite soil which contains plant's root. By the effect of root, mechanical properties of the composite soil are different from those of usual soil. Then, it may be necessary to estimate and to recognize qualitative and quantitative influences of this difference i.e. root's effect to the trafficability, especially that of low ground contact pressure tractor such as the crawler type. The mechanical properties of composite soil was discussed as a first step to achieve this purpose in this paper. Some experimental results of paddy field's soil as a kind of composite soils showed that the effect of root appeared evidently in the extension and low stress deformation processes. Because plastic deformation also occurred remarkably in these stress states, the composite soil was classified mechanically into the elasto-plastic body. Based on these results, an elasto-plstic model, which was modified one for soil, was introduced and examined qualitatively its behaviours.

• Supplemental Notes:
  • From the Proceedings of the International Conference on the Performance of Off-Road Vehicles and Machines (8th), Volume 3. Held at Cambridge, England, on August 5-11, 1984, AD-A150 653, pp1189-1200.
• Corporate Authors:

  Ryukyus University

  Naha,   Japan 
• Authors:
  • Veno, M
• Publication Date: 1984-8

Media Info

• Pagination: 12 p.

Subject/Index Terms

• TRT Terms: Deformation; Elastoplasticity; Mathematical models; Roots; Soils; Stresses; Timbering; Trafficability
• Uncontrolled Terms: Elastic plastic analysis; Soil deformation
• Old TRIS Terms: Roots (Plants); Timbering (Supporting)
• Subject Areas: Geotechnology; Highways; Vehicles and Equipment; I41: General Soil Surveys;

Filing Info

• Accession Number: 00396786
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 28 1986 12:00AM