THE MECHANICS OF SOIL CUTTING BY A ROTATING WIRE

被引：6

作者：

THAKUR, TC

GODWIN, RJ

机构：

[1] Department of Farm Machinery and Power Engineering, G.B. Pant University of Agriculture and Technology, Pantnagar

[2] Department of Agricultural Engineering, Silsoe College, Bedford

来源：

JOURNAL OF TERRAMECHANICS | 1990年 / 27卷 / 04期

关键词：

D O I：

10.1016/0022-4898(90)90029-L

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The cutting of soil by a rotating wire analogous to the tip of a rotary tiller blade while cutting a two-dimensional soil slice over a range of 'fetch-ratios' (bite length/depth-ratios) in a quasi-static condition is presented. A theoretical model based on Mohr-Coulomb soil mechanics has been proposed to predict forces on the wire (tip). The model is dependent upon observed passive general shear failure of the soil slice towards the curved free surface of a previous cut and the lateral local shear failure towards the undeformed soil. The predicted forces in a frictional soil and in a pure cohesive medium (artificial clay) agreed well with experimental results.

引用

页码：291 / 305

页数：15

共 19 条

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