A model of stress distribution and cracking in cohesive soils produced by simple tillage implements

被引：17

作者：

Ibarra, SY ^{[1
]}

McKyes, E ^{[1
]}

Broughton, RS ^{[1
]}

机构：

[1] McGill Univ, Dept Agr & Biosyst Engn, Ste Anne De Bellevue, PQ H9X 3V9, Canada

来源：

JOURNAL OF TERRAMECHANICS | 2005年 / 42卷 / 02期

关键词：

D O I：

10.1016/j.jterra.2004.08.002

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The objective of this research was to describe the mechanical behavior of soil under the action of a tillage tool, with the purpose of finding a relation between the tool geometry and the resultant soil structure. The problem was solved using fundamental principles of soil mechanics and force equilibrium analysis. As a result, a mathematical model was developed which describes three stress zones within the cut soil volume: shear failure, tension failure, and no internal failure. The model was programmed into a computer to generate maps of normal and shear stresses to visualize the three failure zones. The model was tested by cutting soil with flat tillage tools in a laboratory soil bin, and it proved to provide reliable predictions of the pattern of soil shear and tension failure. (C) 2004 ISTVS. Published by Elsevier Ltd. All rights reserved.

引用

页码：115 / 139

页数：25

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[5]

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